In a follow-up to Mike's post about XMP, I (through CC) have been working with Adobe XMP's product manager, Gunar Penikis, on how CC and Adobe can work together on XMP. Also, in the same line, I'm friends with and working with Cyrille Berger and Hubert Figuiere, who have each noted how positive of a step releasing XMP SDK/Toolkit under a BSD license is for the larger community.
I'm having some other discussions with all the above mentioned folks with regards to how this is going to pan out, but all I can say is that it is going to encouage XMP to flourish, and return help smooth out metadata and embedding across the board.
This really frees up the space for more developments