it's kind of like how most systems aren't backwards compatible through every gen, you'll just have to own your 360/PS3/whatever and not sell it. But, as long as PSN and XBL allow you to keep the same account through each gen, I imagine it won't be a problem.
--
omg did u red text from last night dats so me LMAO : )
im not a slut i jus liek 2 haev fun LOL : )