I was browsing through some MVP only areas (and activating my free TechNet/MSDN subscriptions) when I saw a link to something called Office Labs.
The software that’s on there is purely experimental. MS are trying out ideas and trying to get feedback from users to see if this stuff merits further development. There’s obviously no support for this stuff in production. Some of the tools look pretty cool, e.g. an SDK for touchscreen-like functionality using a webcam and a normal non-touch screen. I’ve just installed an email prioritisation tool to see what it does.
Note: it only works with Exchange connected Outlook.