Dream Theater vocalist James LaBrie once again touched on the matter of drummer Mike Portnoy's departure, stressing that Mike Mangini's position in DT is more than secure. During a chat with Wikimetal, LaBrie also noted that he believes Portnoy has moved on from his former band and is likely happy with his current musical endeavors. "I haven't spoken to Mike since he left the band," LaBrie kicked off (via Blabbermouth). "Myself, personally, and the way that the band feels is we're moving forward. Mike Mangini is our drummer and he will remain our drummer until the day that we're finished doing this. It's just the way that it is." After pointing out that Mangini "completely clicks" with the rest of the group, James focused on Portnoy. "Mike, you know, he's moved on, he's working with musicians and doing the things that he wants to do musically, and I think he's happy with that. But as far as Dream Theater [is concerned], this is who we are and this is who we will continue to be. Mike Mangini is our drummer, and he will be." Dream Theater released their new, self-titled record on September 24 through Roadrunner Records. The band recently posted an unboxing clip with guitarist John Petrucci revealing the content of "Dream Theater" limited edition collector's box set version. Check it out below.