We've prepared firmware 18.104.22.16876. The AC/SHD firmware isn't present so we'd like you to continue to use thelatest release-toronto build. We hope to have the Toronto firmware merged in the near future.
Please see below for the changelog and links to the firmware binaries.
Firmware changes from 3.8.11:
[ACG1] Add multi-block WLAN schedule support.*
[UAP] Add management VLAN support for wireless uplink.*
[UAP] Add options for RF scan (active/passive, background/foreground).*
[UAP] Add support for best channel suggestion after running RF scan.*
[UAP] Add support for fast-apply WLAN config, for existing WLANs only.
[UAP] Allow 80MHz for Russia country code.
[UAP] Remove iperf package, as it does not provide proper results when using an AP as an endpoint.
[UAP] Various security and backend fixes and/or improvements.
[USW] Add missing IPv4 multicast trap policy (due to code base upgrade).
Links are all HTTPS. This assumes your device(s) are currently running at least 3.7.51, and that the device's date is properly set (i.e. it can reach a NTP server). If you encounter issues with the upgrade, or your device isn't on a minimum supported firmware, then you can change the link to HTTP before performing the upgrade.