According to this quote found on Eurogamer
It also reiterated that Street Fighter II: Hyper Fighting, Uno and Texas Hold ‘Em Poker will be out on Xbox Live Arcade - given the “this is our spring line-up ZOMG” style of the press release, presumably quite soon.
Microsoft has let a couple cats out of the bag. First it seems that earlier rumors were incorrect about a delay for Street Fighter and also, a version of Uno is on it’s way. While who is creating Uno is unannounced, a good bet would be Silver Creek Entertainment, makers of the Hardwood Series.