I'm already using it. If you have the money to spare, a really powerful pc and nothing better to do, then sure you can upgrade now.
Imo people should wait a few months or so cause there are a few hardware companies who have
been lame enough to not have not yet made their products fully compatibility yet.
That is just my opinion.
Anyway, xp is pretty good too. Everything worked perfectly on xp. No problems at all (after sp2 atleast
) so I liked that as well.
Its your choice at the end of the day. Do you really want to spend all that for an os?
/ 
