Booting up your PlayStation 4 this morning you might notice a software update. This will bring your system to version 3.11.
As the number suggests, it's not a major update by any means. According to Sony, "System software stability during use of some features has been improved."
PS4 system software 3.11 will be live today to enhance system performance
— PlayStation Europe (@PlayStationEU) November 9, 2015
PS4 firmware update 3.10, which I guess you could say was the system's last major update, arrived in October and brought a number of new features including the ability to follow verified accounts of game studios and developers, and stickers! Everyone loves a good sticker.