This time its official per a tweet from Michael Bay.

It's a wrap on #transformers4 #michaelbay #tf4 #transformers
— Michael Bay Dot Com (@S4TE) November 5, 2013

Filming on Transformers: Age of Extinction may be complete but the work is only half done for Michael Bay and his crew as they enter the post-production phase. While the director has been editing the movie as he films and ILM has probably been working on the movie the entire time, at this point things shift into another gear as the June 27th deadline looms. Eight months seems like a lot but the more special effects a movie has, the more time it needs. On top of completing the CGI, there is recording the soundtrack, sound design, sound effects, voice recording, ADR, color correction and a whole lot more. All of which needs Bay's approval at every step of the way. The last time TF3 was complete the day of world premiere, I doubt Bay wants a repeat.

Congrats to the cast and crew. Also a big thanks to all the site readers who helped provides pictures, video, links and updates on the movie so we could follow along.