PS3 System Software Update 4.11 Released
This PlayStation 3 Firmware revision is currently not a mandatory update and an optional incremental patch is also available.
Source- PS3 System Software Update (v4.11) – PlayStation Blog
Later tonight we'll be releasing an optional system software update (v4.11) for PlayStation 3.
This minor firmware improves certain aspects of system software, and is not mandatory to connect to PSN.
Again, this update is optional in the US and Canada, and can be downloaded by selecting System Update from the Setting column of the XMB.