Even though Crystal Dynamics stated in the past that Rise of The Tomb Raider was gonna be an Xbox exclusive, it looks like that change with them announcing that Lara Croft is coming back to PlayStation and PC next year.
As stated in the Tomb Raider Tumblr blog, Rise of The Tomb Raider will be a timed exclusive for Xbox One and Xbox 360 for one year after it’s initial Holiday 2015 launch, with the PC (Windows 10) version on Steam coming out early 2016 and PlayStation 4 version in Holiday 2016.
Rise of The Tomb Raider will arrive first on Xbox One and Xbox 360 on November 10, 2015 with all other versions coming out next year.