I was about to comment on the incomplete/non-sensical (on it's own) title, but it does turn out to be just as Bamond said, and what RazorX3000 said would have been the preferred phrasing, but I can see how figsdad tried to get his answer as quickly as possible. I don't think anyone on this board knows the answer. That being said, I'd guess the filming will end by the end of September, and might still warrant some additional filming (pick-ups) later. It'll be all ILM, and editors, from that point on . . . I mean ILM is one of the entities, that starts, before the script is done (with pre production), and doesn't stop working on the movie until up to two hours before the film's premiere (ROTF -- true story).
I Hate HIGHLY doubt that Sqweeks and Hot Rod are the only new Autobots. Besides Hasbro wouldn't let that happen.