2026-05-15 · firedancer
Firedancer published a new testnet release, v0.909.40001. The update is aimed at improving resilience while moving the stack closer to the latest Agave release. For Solana infrastructure watchers, this is the kind of release that matters because it feeds directly into validator and client hardening.
The release updates the Agave submodule to v4.0.0-rc.1, improves resilience in a few edge cases, and refreshes the GUI. The release notes also say it may be used on mainnet with a small amount of stake under Anza's guidelines.
Firedancer remains one of the most important performance and reliability tracks in the Solana stack. Testnet releases like this help validate client behavior before wider deployment and give operators a clearer path to safer upgrades.
Validators and infra teams should review the release notes and compare them against their current deployment policy. If you're running infrastructure close to the edge, this is a release to track rather than ignore.
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