The Mainnet Plutus Cost Model update has been ratified on June 13, 2026 at 21:45 UTC.
Enactment: June 18, 2026 at 21:4 UTC
REMINDER for DApps and developers to test their setups on Preview/Preprod ahead of Mainnet enactment to ensure that they aren't negatively impacted by any cost model changes.
While the newly introduced primitives do not take effect until after the hard fork, existing cost models will be updated at the enactment of the parameter update action on June 18.