Hi all,
Just as Gek mentioned - the issue with documentation is solved through right SAP channels. Whoever was in touch with you to sign you up to the beta participation program will eventually solve the documentation availability issue. Myself had originally no documentation and wrong binaries on the marketplace in "company's beta software" rubric. But this was solved pretty fast. In my case Vinod has been very helpful: I have started the process with him and he helped me to sort out all the issues.
Officially, I think the release date for ASE16 SP02 will be around October 2015 (Gek?) so by that time documentation will be available to the general public...
HTH,
Andrew