Sony have announced the release date for Resistance 3 on the Playstation Blog - the game will be out in the PAL territories on September 7, except for the UK and Ireland which will have to wait until September 9.
There's of course various pre-order bonuses as well, a special edition and the "Survivor Edition" which comes with a fancy bag, playing cards, toy soldiers (!) and other goodies. Check out the Playstation Blog for all the information about the various versions available.