Ethereum Fusaka Upgrade Final Testnet 16.78M Gas Cap
Ethereum Fusaka upgrade has entered the final testnet phase ahead of a planned mainnet launch on December 3, 2025. The Ethereum Fusaka upgrade, implemented via EIP-7825, introduces a per-transaction gas cap of 16.78 million to improve block efficiency, reduce denial-of-service risks and pave the way for parallel execution. This cap is already active on the Holesky and Sepolia testnets, preventing single transactions from exhausting the 45 million block gas limit. The upgrade also raises the default block gas limit to 60 million and adds PeerDAS for scalable data availability. Developers relying on large deployments must adjust contracts, as transactions exceeding the new cap will revert. According to the Ethereum Foundation’s Toni Wahrstätter, most users will see no impact. Traders should watch performance on the upcoming Hoodi testnet rollout on October 28.
Neutral
While the Fusaka upgrade signals a significant scaling milestone for Ethereum, the final testnet rollout is unlikely to trigger immediate price movements. Traders typically factor in planned protocol enhancements well in advance. In the short term, testing phases tend to maintain price stability, as they pose no immediate network disruption. Over the long term, gas cap limits, higher block gas ceilings and improved data availability strengthen Ethereum’s fundamentals and support future parallel execution, which could bolster demand. Overall, this development reinforces confidence without causing a direct market rally.