I just got an update to my BB Passport today
It's now on 10.3.3
The odd thing is that for the last 24 hours or so it was running warm, and the last charge didn't last the normal 3 days. I wonder if it was frantically trying to get the update over Wifi but failing because I'd switched that off.
Wifi on, power cable attached, and it downloaded 1.5GB (!) and updated pretty swiftly.