Two things come to mind.
Very terse statements about the removal of GB members have appeared three previous instances: Raymond Franz, Ewart Chitty, and Leo Greenlees. In no case was any explanation offered for their very different, as it turned out, reasons for departure. The closest to an explanation were Watchtower articles that appeared in the following months on apostasy, homosexuality, and abuse - a bit like the “marking” talks with no names, but you were expected to read between the lines.
So on that precedent we may expect no further explanation.
But the second thing that comes to mind is how completely differently ordinary JWs view the members of the GB these days, as leaders, as role models, almost as celebrities. So will they do anything differently about this departure than they have in the past?