Yesterday· 13 JulRelease

v4.1.0 Testnet Release

High8.0

◆ Description

Constellation ships Tessellation v4.1.0 to IntegrationNet, rebuilding the global (L0) consensus engine on a leader-based, partially synchronous BFT model with improved liveness, chain recovery, and hardened MPT state proofs. Mainnet remains on v3.5.12.

◆ Why it matters

Constellation ships a rebuilt L0 consensus engine on testnet, swapping to a leader-based partially synchronous BFT model with stronger liveness, chain recovery, and hardened state proofs. The change targets the core of what the network is valued for — agreement and state integrity — but the re-rate stays partial until mainnet migrates off v3.5.12. Testnet release is firm progress on a thesis-shaping upgrade, not the upgrade itself.