Well, technically, the Raptor is designated F/A-22A Raptor. If the attack version is ever built, it would be designated F/A22B Raptor, with the larger delta wing configuration and 2 airmen sitting in a tandem position - pilot and weapons officer. And yes, there are provisions for 4 hardpoints on the wings - 2 on each for the Raptor. Screw stealth, if the military says it can do all the things they say it can do, load it down with weapons and get the job done the first time!
I don't understand why the USAF would decide to build another mucho expensive version of an already very expensive aircraft - that is why they are building the F-35, which is primarily an attack aircraft w/fighter capabilities. The military bigwigs sure don't know how to use common sense - all they know what to do is waste money!!!
We're in a world of downsizing - where we used to have fighters, fighter-bombers, attack, ground attack/support, anti-radar, flying gas tank - the US wants one aircraft to do all those tasks - look at the new F/A 18E & F Hornets -
the F model is going to do the task of attack, fighter, anti-radar (like the EA-6BProwler, it will be redesignated F-18G Growler), and possibly a flying gas tank.