A fifth "Transformers" film for 2017? Maybe.
Images from what appears to be a Hasbro slideshow presentation of upcoming "Transformers"-related product looks to have been accidentally leaked via one of the company's license holders.
tfw2005.com reports that the files contain legit concept art of various "Transformers: Age of Extinction" characters.
Most interesting though is an apparent calendar of film and TV adaptations related to "Transformers". There's the upcoming fourth film on June 27th and its home video release some time in the fourth quarter of this year.
Then there's an animated project in the first quarter of 2015, a second animated project in the first quarter of 2016, and a fifth "Transformers" live-action movie in the second quarter of 2017.
It was previously announced that the upcoming film is the first of a proposed new trilogy, this would seem to confirm it.