We certainly haven’t seen the last of 50 Cent after his performance at Coachella. Fif is back in the lab working on his first upcoming Gangsta Grillz mixtape hosted by DJ Drama. While some of us are still bumping last year's made for the streets tape The Big 10, his next one is just right around the corner. He took to Twitter to announce the release date. The first single is “Remain Calm” and will premiere tonight on Shady 45.