User blog comment:Callofduty4/callofduty.com updated with Ghosts teasers/@comment-10363123-20130519144751/@comment-3503432-20130519191418

Also, the thign about "current generation weapons in the future" may be referring to a Metal Gear Solid style fingerprint ID scanner in some guns that allow only certain people to use them. So current generation weapons may be the only viable weapons avaliable.