Hacker Flatz has shared a lengthy and technical explanation on how to run custom packages on the PS4. Think, for example, possibility to install and run native homebrews from the console menu.
It’s been possible to run native code on firmware 1.76 for a while, and people have leveraged some tricks to enable piracy, but Flatz has expressed his surprise that nothing has been done yet to load custom content in a practical way. His writeup, he says, will help steer the scene in the right direction, and should not be (too) firmware specific.
Flatz did not release any code with his writeup, only a very detailed explanation on what needs to be done.
If the people with the right amount of skills, time, and dedication can have a look, we might get improved functionality for the PS4 scene, on firmware 4.05 and future firmwares (whenever exploits are released for those). It might take time to get something released out of this, but this is a critical piece of information for anyone looking to hack the PS4 further.