http://www.vg247.com/2013/07/23/agent-trademark-renewed-by-take-two/
Trademark filing
Probably doesn't mean much with GTA on the horizon but it seems they haven't forgotten about it at least.
The filing was submitted on July 18 and applies to a variety of video game and multimedia uses.
The trademark filing suggests that the games logo has remained unchanged following this renewal as the filing reads, The mark consists of the word AGENT with the shape of a handgun comprising the internal section of the letter G.
Trademark filing
Probably doesn't mean much with GTA on the horizon but it seems they haven't forgotten about it at least.