- Router mode provisioning (configuration is basic for now; function limited to IPv4)
- Extended bridge mode provisioning (link speed, LAN IP)
- PPPoE provisioning support
- LACP support
- OLT upgrades ONUs FW in parallel now
- Locate function for ONUs
- ONU name can be set from OLT only (function removed from ONU)
- Slightly improved boot time
- Reduced connection time for ONUs
- WebUI Improvements: UNMS icon, Reporting of lost link on uplink ports
- Removed compatibility with UFibr Nano G firmwares older then 1.2

See full release notes here: 
https://community.ubnt.com/t5/UFiber-GPON-Blog/Router-Mode-Update-OLT-v1-1-0-amp-ONU-v2-0-1/ba-p/2240888