Sony has issued its first PlayStation 4 firmware update since the system's launch, focused mostly on system stability. The 1.51 software update hit last night, and consoles that have automatic downloads enabled (by default) should already have it loaded onto the system.
A post on the PlayStation.Blog says that the update improves "stability of system software" and makes minor refinements to the user interface, like giving a clearer indication when a user downloads a game and game patch at the same time.
Though the post doesn't go into detail about specific stability tweaks, right now the main concern among owners is likely the blue light error. Sony issued a troubleshooting guide earlier this week, but we're not sure if this patch is meant to address it.