StanSmith... Right, since the preload leak had been unveiled its been a trolls paradise all over the interwebs, 99% of all the info your hearing about found klicenses (apart from the dev_klic for the DLC confirmed by Alto?) & methods to get working are 100% fake. The majority of all the pictures found and videos are also faked too. The gameplay pic on the front page has been photoshopped, the actual pic is a screenie from an official GTAV video I believe that has been docked with the weapons hub. The only pic I do lean to being real are the printing factory ones.
The reason why we don't have an EBOOT yet is mainly down to job security and access. In the printing factory there is no guarentee really if the discs getting labeled actually had anything on them. Just say you worked there a "borrowed" one, if caught not only you'd lose your job but also could face criminal charges would it be worth it for a "chance" the disc had something on it? The same goes for the game reviewers, I doubt anyone who gets paid alot of $$$ to play games early and give their honest opinions would risk it all for a quick release.
Everyone just needs to bide their time with this one, there are other games out there you can play to fill the void until it is released, be it slightly early via a unknown "leak" / "source" of if we all have to wait till the official release date before you can get your hands on the files you want most.