It mentions Edge is also losing MV2: is it? Any source after the 2024 Neowin article that an Edge Canary build 16 months ago disabled UBO?

No issues with UBO on Edge 149 (stable) and it's still available on the Edge Add-ons (it was featured by Microsoft, funnily enough, a few months back):

https://microsoftedge.microsoft.com/addons/detail/ublock-ori...

Did I miss something? Microsoft's official statement is that "The Microsoft Edge team is currently in the process of updating this MV3 migration timeline". Now, they've been working on that timeline since at least May 2025, so maybe with Chromium 150 / 151, they'll make it more concrete?

https://learn.microsoft.com/en-us/microsoft-edge/extensions/...