Lua dump of U79 can be found here. It's quite a lot of changes obviously.
playerinventorygui.lua is only partially decompiled because it makes UnLuaC choke,
just like lootdropmanager.lua and coreareatrigger.lua, which are not included at all.
Because I still cba to debug UnLuaC and fix it, sorry.
EDIT: What I found already or what seems to be coming during Crimefest:
- Loud / stealth indicators for lobbies
- Escapes where you drive (or are being driven?)
- Multiple preferred characters
- Phil.