[WesternWind]

That's almost exactly the split they made actually, with things like feats and flight still species based, but statu bonuses and backgrounds (with maybe some small exceptions) not being species based.

They did some work to balance it, but really species have never been the biggest balance issue, it's always been class stuff, or magical vs. martial issues, or the fact that ranger is thematically cool if you like LOTR, but sucks mechanically compared to other classes.

[ineptech]

Have the details been published anywhere? I looked briefly and only see stuff describing it in general and saying it is yet to be released.

[WorldMaker]

These changes were a part of the 2024 edition of the Player's Handbook (PHB) and Dungeon Master's Guide (DMG), both now published, with more of it to come in other updated books. (Or "5.2E" if you prefer the simple decimal point of the 2024 updated Systems Reference Document [SRD] over "5E (2024)".)