They're more than likely going to be releasing upressed versions of the 360 version because more people will but it. Right now you'd need a monster pc to match what the One and PS4 are capable of.
That's absurd. I'm running a GTX 660ti and an i5-3570k, which is a generation-old and has modest specs at best. With the exception of 4xMSAA I can max the Battlefield 4 beta, which still is yet to undergo additional optimization and decent driver support. I don't see myself needing to upgrade until 2015 at the earliest.