It appears that AMD is currently working on FreeSync 2, however there is a catch. FreeSync 2 is a brand new technology that has nothing to do with the first FreeSync.
While the first FreeSync puts an end to choppy gameplay and broken frames with fluid, artifact-free performance at virtually any framerate, FreeSync 2 is a new technology that will automatically switch your monitor into HDR mode.
FreeSync 2 will offer over 2X perceivable brightness and color volume over sRGB.
Videocardz has leaked the slides for FreeSync 2 that can be viewed below.