...
https://github.com/brave/brave-core/pull/15141 added support for WoA. Related GitHub issue https://github.com/brave/brave-browser/issues/6319
Widevine support is not yet available.
Brave started producing Windows Arm64 binaries from v1.47.x (E.g: https://github.com/brave/brave-browser/releases/download/v1.47.97/brave-v1.47.97-win32-arm64.zip). See GitHub release tags for other versions.
Brave official download page doesn’t provide Windows Arm64 binaries yet. See discussion in https://github.com/brave/brave-browser/issues/6319
Latest installer - https://laptop-updates.brave.com/latest/winarm64