It would be pretty stupid if they didn't do a lower price and so i think we can pretty much say for certain it will be at least 20 quid cheaper. Any the activison
PR is a hell of a lot friendlier then EA, They sent me a free GH3 guitar and copy of the game when my guitar went a bit dodgy so i certainly respect them alot more than EA.
OXM also did a preview on GH4 in this months issue and it does look pretty amazing.