Transformers Age of Extinction has crossed the $1 billion dollar mark. It did so on August 2nd when the foreign box office numbers for the film came in from July 27th, so even though it was official slightly later than Dark of the Moon (July 31st), the mark was crossed at roughly the exact same time. Also it is notable that there were many countries where TF4 was released later due to the World Cup. As of August 3rd, Transformers 4 has totaled $241,206,987 in the US and has just now fallen outside the top 10 (11th) in daily earnings. The movie should come very close to Captain America The Winter Soldier and The Lego Movie domestically but only time will tell if it is able to surpass them. Overall, Age of Extinction now sits at $1,005,006,987 worldwide as of August 3rd, which puts it 18th all time. It passed The Dark Knight for that 18th spot yesterday. Transformers 4 has yet to be released in three more countries, including Japan.
Michael Bay is now rumored to return for Transformers 5 after signing a three year extension with Paramount Pictures. This does not necessarily guarantee a return to the director's chair for more Transformers films though. The deal was specifically in regards to Bay's production companies Platinum Dune and Bay Films. The deal could hint towards Bay directing the fifth Transformers film or it could also be for a producer role or even for another Paramount distributed movie.