Hmm, must be ITMS Europe - either that or Dual 1.5 GHz 17" PowerBooks.
Seriously though, maybe it's just some sort of Xmas promotion? I know the US Apple Store announced their "free Epson printer" deal before us here in Canada got our equivalent "free lexmark printer" deal, so perhaps something similar is happening with the UK Apple Store? Or do they already have their Xmas promotions updated? I haven't been paying attention much, just a thought off the top of my head...