its out now.
£35 in Game.
or
play.com

i bought it on saturday.....game is mad......graphics are top notch......on board view is amazing.and wheelying the bikes is very very fun.125s,250s,400s,600,s750s(rc45),1000s and side cars.
This game is a must for all you Isle of Mann fans.
esp when racing round with traffic.....i like to slow down and hoist it up past cars......yes im sad
get full on tank slappers......lots of nasty bumps in the corners......so realistic...........as close as im gunna get to IOM for a long time.

a must buy peeps.