This is what they say in a FB post:
The latest AX PRO update delivers new device support, enhanced system protocols, and a refreshed APP experience for smoother operation and smarter control.
System & Device Upgrades
- Support for new peripherals
- Added OTAP & Intercom Service protocols
- Optimized ARC configuration
- Control Panel now supports Double Zone Wiring
- Integrated with more IPCs: HeatPro & AcuSense
- No sounder quantity limit
App & UI Enhancements
- New installation wizard
- Customizable homepage shortcuts & widgets
- Simplified interface for easier control
Functional Improvements
- Detector: Added Deactivation function
- Sounder: Supports silence during stay arm mode
I got the same notification yesterday, but after the issues I've had with the last upgrade (to 1.3.0) i opted to stay away from it, at least for now.