Ethereum's Fusaka mainnet upgrade is scheduled to activate on December 3, 2025, following the Pectra upgrade as part of Ethereum's scaling roadmap. The upgrade aims to improve L1 performance, increase blob throughput, and enhance overall user experience on the network.
Ethereum's Fusaka testnet has been announced following the Pectra upgrade, introducing PeerDAS and improvements to enhance blob throughput and L1 performance. The testnet activation begins with Holesky at slot 5,283,840 in October, marking a significant step in Ethereum's scaling roadmap.
The Pectra network upgrade is scheduled to activate on Ethereum mainnet on May 7, 2025 at epoch 364032 (10:05:11 UTC). This represents a major planned upgrade to the Ethereum network with mainnet client releases being prepared for the activation.
The Pectra testnet activation exposed deposit contract configuration issues across Ethereum testnets. While Sepolia recovered quickly, Holesky experienced significant inactivity leaks during its recovery process before eventually finalizing.
The Pectra network upgrade launched on Sepolia testnet at epoch 222464 but encountered issues with the permissioned deposit contract that prevented execution layer clients from including transactions in blocks. The root cause was quickly identified and client teams began immediate remediation efforts.
An external security review of Ethereum's Pectra System Contracts has been completed, with results published in the audits repository. All discovered issues deemed relevant or important have been addressed, contributing to ongoing improvements in Ethereum protocol security.
The article announces the launch of the Pectra testnet, representing a significant milestone in Ethereum's development roadmap. This testnet will allow developers and validators to test new features and improvements before they are implemented on the main Ethereum network.
Ethereum client, testing and research teams gathered for the Nyota interop event to work on the Pectra network upgrade, PeerDAS and the Verge. The focus was achieving multi-client compatibility, similar to previous interoperability events like Edelweiss and Amphora.
Ethereum's Mekong devnet is being deprecated as the Pectra network upgrade has been successfully activated on Sepolia and Holesky testnets. The Mekong devnet previously served as a testing environment for wallet developers and stakers to experiment with upcoming Pectra changes.
Pectra Audit Competition launches on Cantina platform, running from February 21 to March 24. The month-long security audit competition aims to engage the security community to identify potential issues in the Pectra system.
