Network Notices

Active upgrade notices, deprecations, and network change announcements for OP Stack operators.

Notices are time-bound action items for application developers, node operators, and chain operators: upcoming network upgrades, deprecations, and operational changes. Each hardfork also has a permanent entry in the hardfork registry recording its activation times, governing spec, and minimum component versions, and contract-only upgrades are listed in the registry’s contract upgrades table — notices are archived after activation, registry pages are forever.

Network upgrades

Upgrade 19

L2 Contract Manager, Osaka on L2, Kona Respected Game Type

Interop Activation Prep

OP Sepolia and Unichain Sepolia interop activation preparation

Deprecations

End of Support: op-geth

Migrate to op-reth before May 31, 2026

op-deployer Upgrade Deprecation

The op-deployer upgrade flow has been deprecated

ReqResp CL Sync Deprecation

The ReqResp consensus layer sync mechanism is deprecated

Operations

Specialized Node Topology

Guidance for Supernode and Light CL node topology

Stake-Based Priority Ordering

New transaction priority ordering mechanism for sequencers