This topic would be a topic of continous NBA 2k12 UNOFFICIAL roster updates for the following years.
03.15.13 - Trade of Kings/Rockets + Kenyon Martin to Knicks Update
Download Link: http://www.4shared.com/file/GCIQN3yg/031513Roster.html?
02.28.13 - Rudy Gay Trade Update
Download Link: http://www.4shared.com/file/QoVej_0_/022813Roster.html?
02.12.13 - Starting Roster for 2012-2013 Season Update
Download Link: http://www.4shared.com/file/Zw4eeKkp/021213Roster.html?