Sony just pushed out a new firmware update for the PS4 that brings it to version 3.15. The new update doesn't actually add anything new, however.
In the patch notes there's only one line that very simply states that it "improve the quality of the system performance," meaning they generically streamlined something to make it more stable, but what and why is unknown. As we download it ourselves we'll take a look at if anything actually improves.
I don't quite remember it having too many issues before with the last update, though just to be on the safe side, why not update to the latest. It should be done automatically for most, though you can always manually update within the PS4 itself, or head over to the website and update via a USB drive as well.