as Microsoft are releasing a tablet later this year, with a new operating system I was wondering whether we can already create apps for this platform and have them on the market place prior to release?
If this is the case where could I get my hands on the API’s needed to go about creating a touch application in XNA for the upcoming windows 8 tablet.
Right now it looks like XNA applications will not be directly supported by the marketplace (source); however, MonoGame games are able to get into the Marketplace. This is an open-source alternative to XNA.
At this point, consider XNA to be around for a few more years but not directly supported in anything other than what it currently works on Xbox, Windows Phone, and Windows but not on the Windows 8 Marketplace.