Solana core developer Anza said Mainnet Beta Transaction V1 will activate at epoch 1035, with the expected time around 1:20 UTC on September 15. According to Odaily, the ecosystem team said it needs more time to test and integrate V1 support, and V1 is already live on devnet for integration testing. In V1, compute budgets are set through a new transaction configuration, while compute budget instructions will still work in legacy and V0 transactions but will not take effect in V1. Application developers were told to check how the changes may affect their apps, even if they do not plan to send V1 transactions.