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.