Examining a development build of Mirror's Edge Catalyst (Codename: Pamplona, 2015-12-12) sourced from an EA TestKit - all credit goes to 5UP3RH0T from Alpha Archive for sharing the build.
I am playing on a jailbroken PS4 Pro, you cannot play this build without a jailbreak applied.
0:00 - General gameplay differences
5:21 - "Release" mission differences
See @Hekigan's video for a much more comprehensive playthrough: https://youtu.be/Vu9Sb8jJvco