Having made the dev kit for the Surface available to select partners in June (a tiny bit late), Microsoft has now officially let the software loose for all and sundry to explore, experiment, and hopefully innovate with. Whereas Surface Developer units have been required till now to successfully design and test an app, the SDK should allow thrifty designers to produce content for the massive multitouch coffee table without necessarily owning one themselves. For the sweetest (so far) example of what can be achieved w