A great start to the day.... enjoy it!
IMHO, There's no way on earth that a new Nikon professional full framer is going to come in around the £2k mark. No Nikon modern release [camera or lens] has ever cost less than its predecessor, especially with the R+D/early adopter tax to think of. Look at the basic cheapie portrait primes, the 50mm/1.8 or the 85mm/1.8, for a guide to what progress costs.
£2399, the present listed RRP of the D700, is likely to be the starting point but it could be £2499 or even more. Regardless of what this does to D700 used prices [and that's for the separate thread], I just can't imagine there's anything other than wishful thinking that a D800 will be £1999 or so list. Time will tell, so we'll find out for sure on the 7th. One thing is certain; if you wanted a D700 new, then there's only a short time left to get one because I can see the last stock going very quickly [at £1800] if the D800 is another £600-800 on top of that. Either that, or pray your timing is perfect for the 'fire sales' of the old stock...