I do not see either of those extensions here:
Phoronix: AMD Publishes New OpenGL 4.4 Extensions
AMD published two new OpenGL extensions today that the graphics giant has developed...
So what's your point?
If anyone was going to post some snark here, i thought it would be that fglrx doesn't even support 4.4 yet, and they are already working on extensions based on that spec rather than the 4.3 version they do support.
The misunderstanding is mine - I thought these were a part of OpenGL 4.4.
Actualy the first extension requires OpenGL 4.0 while the second only requires transform_feedback3 so it could be implemented on top of existing mesa. The fact that it's writen against 4.4 means that they took into account interactions with all the extensions mandated by OpenGL 4.4 (core)