Quite a bit: https://github.com/popcorn-official/popcorn-desktop/compare/v0.3.9-flatpak0-a...v0.4.0 https://github.com/popcorn-official/popcorn-desktop/compare/

Quite a bit: https://github.com/popcorn-official/popcorn-desktop/compare/v0.3.9-flatpak0-a...v0.4.0 https://github.com/popcorn-official/popcorn-desktop/compare/... No write-up I can find though.