On April 20, 2026, Ethereum co-founder Vitalik Buterin delivered a keynote speech at the Hong Kong Web3 Carnival, unveiling a comprehensive five-year technology roadmap for Ethereum. Covering 2026 to 2030, this roadmap identifies scalability, quantum-resistant security, and ZK-EVM verification as its three core pillars, outlining a clear path from short-term execution layer optimizations to long-term protocol hardening.
During his speech, Vitalik reaffirmed Ethereum’s core mission: not to chase the fastest transaction speeds, but to become the world’s most secure, decentralized, and always-on "world computer." Anchored in this vision, the roadmap breaks down the next five years into three phases: short-term breakthroughs, mid-term state optimizations, and long-term protocol solidification.
Why Short-Term Scalability Demands Multithreaded Parallel Progress
Scaling the execution layer is the most urgent technical task for the next one to two years. Vitalik made it clear that the next hard fork will incorporate multiple EIPs, including block-level access lists (enabling parallel verification), gas repricing, ePBS (execution-block proposer separation), and improvements to node state synchronization.
Among these, the gas repricing mechanism will align operational costs with actual execution time. In the upcoming Glamsterdam upgrade, state creation costs and execution costs will be separated—SSTORE operations will incur both regular gas and state creation gas, with the latter excluded from the transaction gas limit. This enables larger-scale contract deployments. The gradual rollout of a multidimensional gas mechanism, along with plans to raise the gas limit from 60 million to 200 million, aims to boost theoretical throughput from around 1,000 TPS to 10,000 TPS, with smart contract call fees expected to drop by about 78.6%.
The introduction of ePBS structurally reshapes power distribution in block construction. This mechanism allows the block validation process to occupy a larger portion of the slot time, rather than being limited to a few hundred milliseconds, thereby improving validation efficiency while maintaining network security. Together, these initiatives form Ethereum’s short-term, multithreaded scaling approach, spanning execution, validation, and block production.
Why Quantum-Resistant Upgrades Are a Non-Negotiable Protocol Layer Baseline
The threat of quantum computing is moving from theory to reality. Vitalik explicitly listed quantum-resistant security as one of Ethereum’s five long-term protocol goals, stressing that this is a "non-negotiable" baseline.
The technical challenge lies in efficiency bottlenecks. Quantum-resistant signature algorithms have existed for two decades, but their signature sizes reach 2–3 KB (compared to just 64 bytes for current elliptic curve signatures), and on-chain gas consumption is around 200,000 (versus 3,000 today). At this scale, deploying such solutions on Ethereum is not yet economically viable.
There are two main solution paths: in the short term, leveraging hash-based signatures and "lattice + vectorization" schemes, with EVM vectorization upgrades to reduce efficiency loss; in the long term, building a comprehensive post-quantum security framework via ZK-EVM and formal verification. Optimization of quantum-resistant signatures is actively underway, with the goal of reducing resource overhead to acceptable levels without compromising security.
How the Three-Phase ZK-EVM Roadmap Will Reshape On-Chain Verification
ZK-EVM is the most structurally transformative pillar in this roadmap. Vitalik announced a clear three-phase timeline: by 2025, the goal is "sufficient speed" for real-time EVM execution verification; by 2026, "sufficient security" will be achieved, starting with deployment on a small subset of nodes (such as solo stakers); and by around 2028, ZK-EVM will become the primary method for verifying the Ethereum chain.
The 2028 milestone is especially significant. By then, mainstream adoption of ZK-EVM will enable single-slot finality in 10–20 seconds, allowing lightweight devices like smartphones and IoT hardware to independently verify on-chain data without relying on centralized full nodes. This marks a fundamental shift in Ethereum’s decentralization—any lightweight device can participate in independent on-chain verification, systematically eliminating the risk of validator centralization.
Why Account Abstraction Upgrades Are Key to Transforming User Experience
EIP-8141 is the core proposal in this roadmap for upgrading user experience. It redefines Ethereum transactions as a series of calls, with native protocol support for smart contract wallets, gas fee sponsorship, quantum-resistant signatures, and privacy protocols.
Traditional EOAs (externally owned accounts) rely on elliptic curve signatures. Account abstraction decouples transaction origin from signature scheme, allowing accounts to use custom verification mechanisms. This means users can leverage social recovery wallets, initiate transactions without holding ETH (via gas sponsorship), and integrate privacy protocols. Vitalik emphasized that this upgrade will greatly expand Ethereum’s application boundaries and significantly lower the entry barrier for non-technical users.
Why State Layer Scalability Is More Challenging Than Execution Layer Scalability
From a technical standpoint, scaling the state layer is considered "deep water." Vitalik noted that execution layer scaling is relatively straightforward, but the unbounded growth of the state layer is a much tougher systemic challenge.
Each new account or contract entry increases state size, and full nodes must store all historical states to validate new blocks. The mid-term roadmap will focus on optimizing the state tree and exploring alternatives that don’t require permanent storage of all historical states. The separate accounting of state creation costs in the multidimensional gas mechanism is an early step in this direction—by imposing economic constraints on state growth, application developers are incentivized to optimize storage strategies.
Maximizing Security Consensus: Target Parameters and the Lean Consensus Path
Among long-term protocol goals, maximizing security consensus comes with clear quantitative targets: under synchronous network conditions, tolerating up to 49% node failures; under asynchronous conditions, maintaining a 33% finality safety threshold.
Lean Consensus is the path to this goal. This mechanism blends Bitcoin-style "available chain" liveness guarantees with BFT-style "finality" certainty, offering both quantum resistance and rapid finality. Final confirmation is expected within 1–3 slots, corresponding to roughly 10–20 seconds.
How Formal Verification and AI Assistance Will Build Long-Term Protocol Security
Formal verification is another pillar of long-term protocol security. Vitalik revealed that Ethereum has begun using AI to generate mathematical proofs for automated security verification of core protocol components.
The logic here is clear: as protocol complexity grows exponentially, manual audits can’t cover every attack vector. AI-assisted formal verification can mathematically prove code correctness, eliminating smart contract vulnerabilities and consensus layer flaws at their root. Coupled with the concept of "walkaway testing"—ensuring the protocol can operate safely and autonomously even if the core development team disappears—Ethereum’s approach to protocol hardening is shifting from reactive to proactive defense.
How the Five-Year Roadmap Establishes a Predictable Engineering Delivery Cadence
In terms of upgrade cadence, Ethereum has moved from fragmented, EIP-centric updates to an era of "predictable engineering delivery." The Pectra and Fusaka hard forks in 2025 validated the feasibility of biannual upgrades; in 2026, Glamsterdam (first half) and Hegotá (second half) further clarify the engineering roadmap.
Glamsterdam launched its first general-purpose devnet test in late April 2026, integrating ePBS and block-level access lists into a unified testing environment. This marks Ethereum’s largest integrated testing phase since the Merge in September 2022. Hegotá will push further, targeting shorter slot times, anti-censorship mechanisms, and account abstraction. Combined with the three-phase ZK-EVM timeline and preparations for quantum-resistant security, Ethereum’s five-year evolution now follows a complete, predictable timeline—from execution to consensus layer, from short-term optimization to long-term protocol hardening.
Summary
Vitalik’s five-year Ethereum roadmap advances along three main tracks: short-term scalability, quantum-resistant security, and mainstream adoption of ZK-EVM. In the short term, the Glamsterdam upgrade will boost throughput to the 10,000 TPS level through ePBS, gas repricing, and parallel verification. On the quantum-resistant front, optimizing 2–3 KB signatures and 200,000 gas consumption is the core challenge, with solutions spanning hash-based signatures, lattice cryptography, and vectorization. Long-term, the three-phase ZK-EVM roadmap centers on 2028, by which time it will become the primary method of chain verification, achieving 10–20 second single-slot finality and enabling lightweight devices to independently verify on-chain data. Account abstraction and state layer scalability support user experience and system sustainability, respectively, while formal verification and Lean Consensus provide foundational security for the protocol’s long-term future. The engineering-driven cadence of the five-year roadmap signals Ethereum’s shift from narrative-driven development to predictable, systematic delivery.
FAQ
Q1: What are the specific milestones in the three-phase ZK-EVM roadmap?
In 2025, achieve "sufficient speed" for real-time EVM execution verification; in 2026, reach "sufficient security" with partial node deployment, starting with a small subset; by around 2028, ZK-EVM will become the main method for Ethereum chain verification, delivering 10–20 second single-slot finality and enabling mobile devices and IoT nodes to independently verify on-chain data.
Q2: What are the main efficiency bottlenecks facing quantum-resistant signatures?
Current quantum-resistant signatures are about 2–3 KB in size (compared to 64 bytes for elliptic curve signatures) and consume around 200,000 gas on-chain (versus 3,000 today). Solutions include hash-based signatures, lattice cryptography, and vectorization.
Q3: What are the main changes in the Glamsterdam upgrade?
Glamsterdam is a major hard fork in the first half of 2026. Key changes include: ePBS introducing separation of block construction responsibilities, block-level access lists enabling parallel verification, gas repricing and multidimensional gas mechanisms, and a gas limit increase to 200 million. The goal is to raise theoretical throughput to 10,000 TPS, with smart contract call fees expected to drop by about 78.6%.
Q4: What does EIP-8141 account abstraction mean for regular users?
EIP-8141 redefines transactions as a series of calls, with native protocol support for smart contract wallets, gas fee sponsorship, quantum-resistant signatures, and privacy protocols. Users can leverage social recovery wallets, initiate transactions without holding ETH, and integrate privacy features—dramatically lowering the entry barrier and improving account security.
