Before ANYTHING can be released MJ's estate has to be sorted out!
AEG will have to arrange a contract and payment royalty rates, rights, and tons of other legal stuff.
Remember its the kids and his mother who now or soon will own all that MJ music, footage and other stuff from his entire solo career! Thats a huge amount of stuff.
Most likely we will see NOTHING until a team of people has been set up to deal with the distribution and copyrights related to all things MJ and his estate. particularly on behalf of his children.
There are millions if not billions to be made from MJ's legacy over the coming decades.
So, as soon as thats all sorted will we see stuff.
Relax, we will see it, but the next few months will be full of legal issues and greedy bastords trying to rip off his estate... ie his children. but when it is all sorted there will be so much stuff on MJ we won't know what to do!
RIP MJJ