I have now seen the first 3 episodes and am really enjoying it. Sir Ian McKellan is great as No2. They haven't messed with too much of it and it has a similar feel to the original.
I even noticed the big white ballon still makes an appearance.
There are only 6 episodes as its just a mini series. IITV already have a site in place for the new series
http://www.itv.com/drama/cult/theprisoner/ no airdate just early 2010 at the moment.