Not long after in an interview published by Variety, Millennium’s Jeffrey Greenstein reveals that they are "working on getting a fourth Expendables. [And] that’s about all [he] can tell [us] at this point."
A paradox that we have become used to in the past few years concerning any news surrounding this mockery that EX4 has become.
If EX4 ever happens, I have a feeling that the speculation of a spinoff with Statham as the lead role is sounding more plausible. If they finally get to make this movie, Sly will either not be in it or have a supporting role with limited screen time much like Willis & Arnold did in the previous installments.