I logged into my Autodesk Subscription this morning as it is the First Customer Ship date (FCS) for the new AutoCAD 2016, and there it was ready for me to download and install immediately.
If you are a customer on subscription you can go download it now and kick the tires of the new release. Those wishing to download the free trail download or educational will have to wait a few more days when all the press release and official AutoCAD 2016 website goes live.
If you were an AutoCAD 2016 aka Project Maestro beta participant: Please make sure to read the release notes and properly uninstall the beta and reboot before installing this shipping release.
Cheers,
Shaan