https://github.com/GloriousEggroll/ULWGL
From the github:
WHAT DOES THIS MEAN FOR OTHER LAUNCHERS (lutris/bottles/heroic/legendary,etc):
- everyone can use + contribute to the same protonfixes, no more managing individual install scripts per launcher
- everyone can run their games through proton just like a native steam game
- no steam or steam binaries required
- a unified online database of game fixes (protonfixes)
It sounds like it'll replace that functionality, but not eliminate the ability to select different versions. So instead of using whatever Bottles is doing, Bottles would use this mechanism to select WINE versions.
I think people are getting the wrong impression because it said "unify" in the title. This is mostly GE want to obsolete wine-ge/winetricks and focus on proton-ge and protontricks/fixes. Nothing out of his works, at least for now. Everything else should work the same.