Same, I submitted around 36 hours ago now and not added yet.
I've personally made a donation, and the amount of games listed in the bundle has remained the same.
Oddly enough, on the analytics page for my game, it says that it's in a collection. But when I click to see what collections it's in, it says there are none. So either I'm misinterpreting what collections are, or maybe it's currently being processed to be added? Not entirely sure. An update of some form would be appreciated, just so that I know I submitted it correctly.
I don't think Leaf has managed to perform the additions yet number here is still 740 something https://itch.io/b/520/bundle-for-racial-justice-and-equality), and he is planning to add only paid games, with free games in a collection to show who has offered support: https://twitter.com/moonscript/status/1269715947599704064
Note from a later tweet:
"If you have a PWYW $0 min price game then I'd be glad to hear you out if you think it makes sense for your game to be directly part of the purchasable part of the bundle. I don't want to exclude those sell their work in alternative ways."