Mine include:

UFC Undisputed 09 (buying it on tuesday)
Prototype
Ghostbusters
infamous
batman arkham asylum
Bioshock 2( not in summer but i felt i should add it anyway cause its the game im most excited about.)
Bionic Commando (i might buy it... still not sure now..)
Mass Effect 2(second most anticipated)
Sims 3
Dead Rising 2
Lost Planet 2(the first one wasnt very good, but footage from this one looks pretty interesting)