...Windows 7.
Well, they can't all be winners.
More news here: http://windowsvistablog.com/blogs/windowsvista/archive/2008/10/13/introducing-windows-7.aspx
ps. It's a fairly shaky choice of names anyway, since it's not the 7th release of Windows. But I'll let these guys do the nit-picking: http://www.aeroxp.org/2008/10/introducing-windows-7/