...It's an awesome project called Pain and Gain. It’s been with Michael Bay for some time now. ...The goal will be to shoot it this year. Sure. Because, I know, he has Transformers to make. Obviously. That juggernaut. I can't wait for that. Plus I got Fast Six business.While it’s easy to read too much into his statement, I recommend being cautious. Johnson's statement would be accurate by default simply because Michael Bay will likely retain his executive producer credit regardless if he director Transformers 4 or not. So while Bay's director status remains officially unconfirmed, this strongly indicates that one way or the other, things will move forward on Transformers 4 in 2013. Thanks to Kris J. for the link.
Johnson: Bay's Locked for TF4
Dwayne Johnson sat down with MTV to promote Journey 2 and while doing that he also spoke about filming Pain and Gain with director Michael Bay. While talking about it, he seemed strongly indicate that Bay is locked to film Transformers 4.