Fantasy Flight Games recently unveiled the new Cudgel alien for the upcoming Cosmic Encounter boardgame, making it the first true homebrewed alien creation to be featured as part of the new game. You can check out what Cudgel is all about right here.
A number of aliens have been featured at FFG.com as the build-up to the new edition of CE continues, but none have been what I would consider true homebrews. Tripler will be new to many players, but he's been played about 25,000 times at Cosmic Encounter Online. Human is new, too, but I never published the idea anywhere for anyone else to see (not to mention that the original idea was later modified), so no one ever got a chance to play it for themselves. Remora is new, but I don't think CE designer Kevin Wilson would argue too hard that his alien creation would qualify as a homebrew.
So congratulations to Cudgel and creator Ken Hubbard. It's no longer a homebrew; it's an official alien!