“This system software update improves the quality of the system performance.”. A pretty usual description for Sony’s latest update to the PS4 firmware. PS4 4.72 was released a few hours ago, and is a mandatory update (if you want to keep PSN access).
Not much is known about this update, but it might have been solely released to patch an issue with Final Fantasy XIV. According to the official FFIXV website:
Regarding the issue where if the FINAL FANTASY XIV application is started up after the PlayStation®4 did not shut down properly (such as after a power outage), a version update of over 20GB in size occurs, Sony Interactive Entertainment has released a PlayStation®4 system update on Jul. 11, 2017.
We ask that PlayStation®4 users update their PlayStation®4 system software to the latest version.
There’s no indication at this point that this new firmware update patches any vulnerability that could be leveraged for a potential PS4 Jailbreak. In the meantime, the PS4 scene is eagerly waiting for a hacker to release a public Jailbreak for the console. The last publicly known PS4 Jailbreak was released for Firmware 4.76. Several hacking groups have confirmed they have working exploits up to firmware 4.55, and it is likely those work up to the latest 4.72, but nothing has been released yet.