It was not even two full weeks ago that Rav1e 0.3 was released with speed optimizations and other AV1 encoding enhancements while released on Tuesday was Rav1e 0.3.1 with a change to boost encode speeds at lower levels…

Source: Phoronix – Rav1e 0.3.1 Is 25~40% Faster At Low Speed Levels For Rust-Based AV1 Encoding