I've been lucky to pre-order my N900 with T-Mobile contract on MPD website couple of weeks ago, so now I'm only waiting for stock to arrive, which will happen around 16/11 according to MPD's email quoted earlier in this thread. Fingers crossed!

Anyway, if anyone is interested in SIM-free handset and all relevant discount vouchers are expired, then I can certainly recommend handtec.co.uk - they currently list N900 for just £435.26 inc. VAT, see: http://www.handtec.co.uk/product.php/2346/nokia-n900 - I have been buying different devices with Handtec three times already, never had any problems whatsoever. If I wasn't low on budget this time, I'd definitely get N900 from them again!