Quite possible there.
It takes a loooong time to install (half an hour on my machine) and so far 45 minutes on my Dad's...
Microsoft seem to have gotten rid of the Windows Experience Index which is a shame - but then I suppose few people actually used it.
The default Windows theme (of various shades of orange) is a bit garish - and they have removed the default backgrounds too, which is a shame.
The new look charms will take a bit of getting used to but they do look better.
Mail is still limited (cant request read receipts).
Overall, its rather nice