Instruments now have real reverb: every voice feeds a shared reverb bus, so sustained notes and releases sit in a common space instead of stopping dead.
Playback is much closer to how your soundfonts were designed to sound: velocity layers now select the right sample, and hi-hats and other exclusive-class instruments correctly cut each other off.
Stereo panning and note releases match FluidSynth's behavior, and filter resonance no longer changes an instrument's overall loudness.
Video export
Exporting video is dramatically faster — over 4x on macOS and Linux.
Fixes
Fixed broken share links when publishing a song to the web for the first time.