I'm pretty certain there will be some sort of announcement (probably friday).
This instagram/facebook clip.
In the Netherlands the official Universal Music Legends facebook page is building up a story about MK the last few days as well.
I also saw a, what appears to be brand new, picture of MK. From what seems to me a pretty decent source.
Most likely from a promotional shoot for the album (MK aka Tommy Shelby before the Tyne bridge).