Here's a link with some details. The first phase is for the Catskills, Capital District/Albany, and Southern Tier. I know Seneca has a Salamanca room in the Southern Tier, but I don't think there are any other casinos or poker in any of these areas. I'm not an expert though.
I think the staged rollout was part of the political dealing that went on to keep the current licensees and indian interests from pouring lobby money into a campaign against the amendment.