Yes. If for no other reason, most of them won't understand what happened anyway. And, Bio has indeed specified it will be up when PSN is, not before. Don't get the rest of your post, obviously you need PSN if you have it on PS3, not if you don't.
Item details on a gamefaqs thread (apparently, I got my own info elsewhere, and didn't 1:1 compare them): http://www.gamefaqs.com/boards/988967-dragon-age-ii/58933564
As could be guessed, it's pretty powerful stuff, a lot of it improves through levels and some have min level requirements.
Expecting new levels at this point is sheer stupidity, if they've actually listened to people instead of continuing on their railroad, we'll be instead be seeing a lot of stuff like this first, while they scramble to 180 deg flip a few dungeons and edit out the doors... Or actually create something new Remember that DAA was the only PRC for DAO that had any wholly new areas.