I saw this too. Lots of speculation on what all this means, without a lot of clear answers. Here are the possible scenarios I've seen discussed:
1. This won't really change much of anything. This is just an internal restructuring, and all the involved games are going to carry on more or less as they have before.
2. This is the end of everything! This is the precursor to major changes and/or the cancellation of some or all of the affected games.
3. This is a signal that Asmodee is taking miniature gaming a lot more seriously, and is the precursor to a lot more resources getting put into all of these games! This last one seems to be particularly popular in the Star Wars Armada groups, with the thinking that moving the game to a segment of Asmodee that is centered on minis games will finally bring an end to the chronic supply issues Armada especially has suffered from.
It is too early to tell right now which way it will go. We'll just have to wait and see! I find the fact that this change is going through right as we are about to see the launch of the Clone Wars expansions of Armada to be interesting. Seeing how the continued roll-out of those sets and expansions goes over the course of 2021 might be telling.