Sony's just released the details for its upcoming PlayStation 3 2.70 firmware update, and while it's nothing that'll knock your socks off, they are some goodies here to look forward to. Additions include text chat for letting you make the best of that new Wireless Keypad -- or some other physical / on-screen keyboard -- with up to fifteen online friends and / or three chat rooms, in-game or out. Speaking of online friends, those can now be sorted by online status to see who most recently logged on, and the file attachment size cap has been upped from 1MB to 3MB. Additionally, you can now back up your PS Store video purchases to an external drive and re
