Browsing Donald X.'s linked games, I found this. I don't usually enjoy Uno, but I'm very excited about any game that uses the "Donald X. Variety Mechanic" (provided in this case the Adventure tiles that differ each game).
It looks like the release date is "March 2014". Does that mean it'll be in brick-and-mortar stores any day now, or is that some sort of convention-only early release? I don't keep up on con schedules.
I don't have concrete information, but I think it was available at a con in France in mid-February, and I think it usually takes a month to cross the ocean. So, mid-March? I usually find out general release dates from Amazon; Amazon doesn't list it yet.
It's like Crazy 8's, but the deck has ten suits (in combinations) and no ranks, and you start with two rules and add one after every hand.