I heard somewhere that you have a choice between the new dashboard, or a classic style Desktop, is that true? That'll probably be a major part in deciding whether or not to upgrade for me.
I can confirm this is true. However, clicking the start button doesn't bring up your programs menu, rather it takes you back to the Metro interface.
I installed it on a ThinkPad T400 yesterday near the end of the day. Didn't have a lot of time to play, but I have a few missing devices to try and get installed. Will probably get those taken care of later today.
My first impression - this is an OS that is clearly designed with Tablet PCs targeted as the primary device, however it does have the classic desktop option, to an extent. I can't decide whether I like the Metro interface yet, I need more time to form an opinion.
I was told earlier by a colleague that in this OS, Microsoft is targeting people who 'want a little desktop capability on their tablet, and a little tablet-like experience in their desktop/laptop.' I would characterize that as an accurate description of what I have seen so far. More to come...