Originally Posted by Slacker
Wha? They can do it any time, no iOS6 needed. They're just choosing to do things differently.
The cross platform game center thing in iOS6 is between Macs and iOS. iPad and iPhone are the on same platform, and lots of games play between the two (including Ticket to Ride, just not in async mode).
iPhone and iPad run the same OS but they are not the same platform.
If you have a secret way of playing Ticket to Ride iPhone with Ticket to Ride iPad PLEASE let me know. The iPhone version only uses Game Center and the iPad version only uses the DoW servers (though it uses your GC username as the login)
Currently (at least as far as I know) you can't connect an iPhone specific version of a game to the iPad specific version with Game Center. Many games that seem to incorporate it actually don't. A good example would be Real Racing 2. Yes you can play Real Racing 2 vs. Real Racing 2 HD but you're not actually using Game Center. Firemint (now firemonkeys) has you login to their cloudcell servers to play online and game center is just used as an auto login of sorts.
The new game center cross platform means that devs have more of a reason to keep feature parity between their apps since each platform will be able to connect. I'm not sure how it will work in this case because the iPad and OSX versions are the same but the iPhone is split between two apps, but I'm definitely hoping that Days of Wonder stop screwing up their own brand and fracturing their already niche market.