If you get a notification on your PlayStation 4 or PS4 Pro about a firmware update, go ahead and install it. It's not that big of a deal.
Sony released a 4.06 update today that is only 297 MB. As with 4.05 last month, there is only one notation. "This system software update improves the quality of the system performance,” Sony wrote, which is also the same thing the previous one did."
If you have been toying with the idea of getting a new PS4 Pro, be sure to check out our guide on what you need to know before buying one..