If you have your KEY2 set to automatically download updates, you can look for the notification. If you prefer to manually download updates, go ahead and take a look and see if it's available for you. Right now, the update has been spotted on Rogers, Bell, Telus, AT&T and more.
Once downloaded and installed, you can check your security patch level, which should now be showing November 5, 2019. If you happen to spot anything new or fixed aside from the security patches, let us know in the forums!