Okay, so at first I was a little hesitant towards the article posted in the OP. Since, T.I.'s album original release date was suppose to be a week from today (the 12th) and was just pushed back to late- September, meaning the album should have been pretty done.

I saw this from SOHH which I trust too

In an exclusive interview with SOHH ATL's Gyant, Tip professed to feeling honored and excited about his sixth album, Paper Trail, and gave some hints to who will be on the highly anticipated follow-up to 2007's platinum disc, T.I. vs T.I.P. "We got Rihanna on there," he revealed.

"We got Fall Out Boy on there. Usher, Justin [Timberlake], uh let me see here, John Legend, that's all I can give you."


So it seems like a done thing. Justin will probably appear on a Danja track, yeah?