I actually for once - LOVE that we are keeping the name of the OS simple and leaving it at Win7. I will admit - I was somewhat disappointed when XP's name was announced internally (internally it was known as Whistler) and I was downright horrified when we decided to call Longhorn "Vista" (my friends call it "Veesta"). Longhorn sounds cool . . . manly . . . Vista is pretty much the exact opposite in my mind . . . it sounds serene and 'pretty'.
Anyhoo - we seem to be doing all the right things with Win7 (you'll know why I'm saying that soon enough <G>): http://windowsvistablog.com/blogs/windowsvista/archive/2008/10/14/why-7.aspx
Wish I could tell you more about it - but I can't. All I can say is that it freaking rocks. I already use it as my daily driver OS at work and can't wait until it's out in the public for testing (which it will be very soon at PDC / WinHec next week).