Based on history, I'd expect a new SDK any day now with the new targets. Before that, the app store has to have the new targets added, and the app store will likely do an "app migration" based on the setting for individual apps.
I'd expect the 645 to be similar to the va3 or f5/935 CIQ wise, so if your app already supports whichever is most similar, and you have "app migration" on for that app, it will be available for the 645 right away (and your version number will get an "-upd" at the end). Next time you update your app, you will have to specify the new target when you build a .iq however..
