If it's anything like how they implemented it last time, then it should be the same type of scaling/progression of items. I couldn't imagine it being any different. As far as if these are the codes for items that were synced to level 61 - I believe that's all they are. I'd have to ask VisualOS to confirm, as he is the one that actually manages the database. I just put it online, made it pretty, and update the database with the changes he makes, lol.