What is Really New in Windows 7?

Ed Bott answers this question very nicely (and honestly) in his latest blog post here.
I agree with what he says, that if you are happy with XP or Vista, there is no hugely compelling reason to get excited about Windows 7. However, you owe it to yourself to check out the new features of Windows 7 and judge for yourself. Or, if you feel adventurous, try the beta for yourself, after reading the posts below about some caveats with running a beta operating system.