So, on Windows 10 tablets you will be able to connect a keyboard and it will suggest switching to the full windows interface. This feature is called continuum. Now, a similar thing is possible with Ubuntu Touch, however with Ubuntu Touch this even works when connecting a monitor + keyboard to a phone giving a full desktop experience from a phone. As far as I have been able to find continuum is not supported on Windows 10 Mobile though I have not been able to find any sources explicitly saying so, so my question is whether this really is not possible and if so why not? As it seems to be quite a major feature for the unified experience they seem to target.
Do note, I am not looking for (baseless) speculation, so please, do back your answer up with actual sources.