Apple have now released their new MacBook Pro Range, along with a new Mac Pro and MacBook Air.
There is a retina display with something like 2200 x 1920, however only available with the 15" at £1700.
They have also incorporated USB 3 on the new 13, 15 & 17 models (something I was longing for).
Also with the Retina model they have cut the super drive and given it a more MacBook Air look.
They are also offering free upgrade to Mountain Lion for people who buy Macs Now.
PS - I think they have also made the upgrades cheaper, although still £75 to upgrade to 8GB Ram on MacBook Pro, instead of £35 (ish) on Crucial.