It looks like Sony has released a new update for Playstation 4 owners, bringing the console upto version 3.55. So far not a lot of information is known about this update except the usual – improves the quality of the system performance.
Installation should be done automatically when you start your console, the download is about 300Mb big. You can ofcourse also download this update manually by going to the PS4 system software website over here.
From what we heard they are slowly working towards a brand new firmware update 4.x which should be released later this year, with some cool new features (including VR support).