Well i contacted Nokia last week from there website and the CEO, this is the 1st reply i got -

Dear Lee,


Thank you for contacting Nokia Care. We would like to thank you for your interest in purchasing a N900 unit. With regard to your enquiry We do apologize but as of the moment we havent have the exact date on when the N900 will be released. As of the moment we have limited production of the unit that you may request for reservation you may get in a Nokia Care point or calling the Uk online shop or visit the visit the link below.

http://shop.nokia.co.uk/nokia-uk/default.aspx