Originally Posted by
Vilhem
I think it has more to do with their useability, kinda like how they sat on Answers for two years before making a big showcase with it.
I've been theorizing for awhile now that the tracks on Itunes are the ones that will be retired, or used less frequently. Those tracks are done and used (though for things like Natalan and Garuda, I do believe they'll still be around).
The unreleased stuff still has potential for them, so they may be hanging onto those for a bit longer before committing them to an OST. Just my speculation though.
Uematsu's contract status shouldn't really be an issue, since it was a commission based job: i.e. he composes for SE, SE retains the copyright but Uematsu is allowed to use for portfolio purposes.. kinda like how Graphic Designers work with businesses to create logos and things like that.