Ethereum’s 2026 roadmap includes this validator risk that’s bigger than you think

Ethereum's 2026 roadmap is split into two tracks: expanding rollup data capacity using blobs via the Fusaka upgrade (starting with PeerDAS) and increasing base-layer execution throughput via gas limit changes, which requires validators to switch from block re-execution to verifying ZK execution proofs.

The execution scaling track, dubbed "Glamsterdam," involves draft EIPs like enshrined Proposer-Builder Separation (ePBS), Block-Level Access Lists (BALs), and general repricing, aiming to raise usable throughput but introducing new failure modes, such as the "free option problem" associated with ePBS.

The major validator risk hinges on the adoption of ZK-proof verification for practical validation, which allows for significantly higher gas limits (up to 200,000,000). This transition is staged, requiring a supermajority of stake to be comfortable with running ZK clients, ensuring proof supply is cheap and credible without centralizing prover sets.

(Source：CryptoSlate)