Version 80.0.361.32 is the build received when downloading from Edge Insider’s beta channel (meanwhile, the latest canary build is at 81.0.394.0 for ARM64).
While Microsoft released the new Edge browser for nearly all Windows devices, ARM64 devices like the Surface Pro X are on a different timeline. Microsoft told us last week that the official ARM64 version will likely be released as a non-beta roughly six weeks after today. Considering beta builds are on a six-week schedule, that sounds about right. That timing also lines up with the new Collections feature, which is getting some final polish before it too is released from beta.
Users do not need to do anything special to download the Beta Edge browser for ARM64. Simply download the .exe file (link below) and it automatically pulls in the ARM64 version. Users can also continue to run either Canary or Dev Insider builds alongside the new Beta version as well.
For those who are looking for something a bit different Firefox has an ARM64 version of its popular browser that is also outstanding.