If you turn on your PLAYSTATION 3′s, you won’t be notified of a new firmware update, but if you go to manually update it, you’ll get the notice. It seems firmware v2.43 is now downloadable over the PLAYSTATION Network.
However, since it is not required, you can choose whether or not to download this. We wouldn’t recommend it since it seems like a small update (v2.42 Â» v2.43). If you see any significant changes, drop us a comment.