Here's what it says is included:
- Improved camera stability
- Improved Wi-Fi stability
- Family Link support
- Latest GMS apps
- Bug fixes and performance improvements
- Security updates through September, 2019
So, yeah. It's not 10/Q as the title says. Though, at least it's a significant security update. Hopefully the other updates work as mentioned, too.
I have an unlocked model running on T-Mobile, btw. Carrier-branded models are likely still lagging behind.
Build number is now: P-MR2-RC001-RZR-190914.3123