What does it do?

Who doesn’t love a firmware update? Sony has just released the latest system software update for PlayStation 5, bringing it up to version 21.01-03.21.00. The update is available to download and install right now, weighing in at 902.4MB.
The real question is, of course, what does this update do? We hope you’re sitting down for this:
This system software update improves system performance.
This author’s PS5 has had to be forcibly shut down a couple of times recently, because the UI has locked up, so fingers crossed this update really does improve system performance.
In case you’re wondering, there’s no firmware update for your DualSense PS5 controllers this time it’s just the PS5 system software. Queue up that download to keep your PS5’s firmware in top form.