Excellent. Microsoft will be doing the unveiling at the Professional Developer Conference at the end of the month, so it should get some good exposure. I got to watch a developer put together an app at Surface HQ a few months ago, and he convinced me that the library and SDK are such that fun and interesting apps can be made relatively easily, and taking advantage of the Surface’s unique interface is facilitated very well. Although it may be mighty difficult to get a test unit, it should be easy enough for developers to slap together a prototype.
MS also mentions the hand-in-hand aspect of Surface and Windows 7, which is supposed to multitouch it up in a couple years here. Makes sense; I know a lot was learned about touch interface design (Windows and otherwise) from working on the Surface.