Windows Vista was in development for about 5 years. Microsoft operating system development team seems to have learnt its lesson and started to work on Windows 7 in a hurry. Less than a year after releasing Vista the Redmond corporate monster has released Milestone 1 of the next release of its OS. On the surface Windows 7 seems very similar to Vista. The graphics and windows look and feel is identical to Vista. But you have to keep in mind this is only a milestone release. By the time Alpha version rolls around the os is expected to look different.

Microsoft Windows 7 Video