If you are seeing a "new" 2012 version for PSP, it is likely a fan-made mod
: Download the latest stable build of the PPSSPP Emulator for PC, Android, or iOS.
: An arcade-style wrestling game that served as the final official WWE-licensed release for the PSP.
: By 2012, focus had shifted away from the aging PSP hardware toward newer systems. The Legacy Alternative: WWE SmackDown vs. Raw 2011