There are talks about an official SFZ 3.0 Standards body board however, and we hope to cram as much of my opcodes in there. We started a WIKI, but its far from something we would want to publish.

In the meantime, Plogue opened a public forum to discuss SFZ format and its inclusions in the ARIA Engine.

http://plogue.com/phpBB2/

Forum reference: http://www.northernsounds.com/forum/showthread.php?t=68230