Hi KC,
All tweaks in the later builds are very minor. I don't have an explicit list - but if you look at recent threads in this forum you'll see most of them mentioned. The last few builds have been getting progressively smaller and smaller with a goal to getting the 4.32 build done.
So 4.32 is recommended for anyone using any build of 4.31. If there are any regressions that surface I'll fix them sharpish.
Cheers
Bruce