Update on T-Mobile

I have the same question. Downloading it now, big update. I took a screenshot of the current software to see what's new.
 
it's the October security update and they upgraded the always on display... lots more customization options... really cool!
 
Upgrade went smoothly. What customization options are new? The October security patch makes it worth it!
 
If you go into settings then display, check out the new always on screen options. I think they updated it to be like the LG V40. There are many more clock choices and even one for calendar.