The game was first announced at E3 way back in 2009 and
the initial planned release date was going to be in 2011 on the PlayStation 3, but the game suffered one delay after another for various reasons, the development team citing the difficult PS3 platform which many studios disliked through its time.
In development since 2014, but publicly discussed before that, the
planned X-Men spinoff has been dealt setback after setback, resulting in its
initial October 2016
release date being pushed back first to February 2019, then to June 2019, and now to... well, it's unclear.