'Frame averaging' is of course what every better cellphone has been doing for the past 3-4 years.
Google's '
night shot' mode is the most spectacular implementation of it (handheld at that!) Plus there's 'computational RAW' on their Pixel phones, with free file storage in the cloud. Google seem the class of the field in such developments at the moment.
Interesting interview with Google's computational imaging guru
here
and deep dive White Paper
here .
Admittedly, it's a lot easier to implement this in a tiny fast flush sensor than a full MF one, so congrats to Phase.
That said, I expect a firmware update by the big names (Sony, Fuji) will bring this into their offerings soon enough.