According to the product listing page at Xbox.com, our favorite little Poker game has a release date of 8/23/2006!
Other tidbits:
Texas Hold 'em poker is the most realistic poker game around. Whether you're a beginner or a pro, enjoy the thrill of the perfect hand or the perfect bluff. Test your skills in ring games and tournaments, or fine-tune your skills playing the scenario you always wanted to be in...