ADRENALINE MOB members Russell Allen (vocals; also of SYMPHONY X) and Mike Orlando (guitar) are writing material for their sophomore album, tentatively due in early 2014. Orlando states: "Pre-production for the new ADRENALINE MOB album is going phenomenal. Myself and Russell have written one hell of an album and are a handful of tracks away from completion! We're hoping to start tracking in a few weeks. We'll be giving tons of studio updates and insight into the tracking of the new ADRENALINE MOB album! Stay tuned everyone for the next chapter in the MOB family... we guarantee it's gonna rock!"ADRENALINE MOB last month parted ways with drummer Mike Portnoy (FLYING COLORS, THE WINERY DOGS, DREAM THEATER, AVENGED SEVENFOLD) due to "scheduling conflicts." A replacement drummer has not yet been announced. In a recent interview with Brazil's "Wikimetal", Allen stated about Portnoy's departure from ADRENALINE MOB: "Of course we knew about it before he made it public. He's been, obviously, real busy with THE WINERY DOGS, which is his next band that he's doing. The truth of it is we wanna keep working, we wanna keep doing ADRENALINE MOB and we don't wanna wait around for Mike to have the time [to put into ADRENALINE MOB]. And he doesn't know when he will have the time again, so that's really what's going down. Mike Portnoy was asked to be in the band by myself. Me and Orlando had already written all the material, so [ADRENALINE MOB's debut album] 'Omertá' was completely finished before Mike joined the act. And it's a bummer, but he's got his sights on other things, and he's not gonna stick around. So we wish him the best of luck, but the MOB's gotta go on." ADRENALINE MOB's most recent touring and recording lineup also included DISTURBED bassist John Moyer ADRENALINE MOB released "Covertá", an eight-track EP featuring cover versions of some of the group's favorite songs, on March 12.