I expect the usual suspects to come out with cases, like Prodjuser, Odyssey, Road Ready and plenty of others.
This gear is making lots of waves, so the accessory producers won’t be far behind, I guess.
I would stay away from generic cases that fit “all” media-players. While the 5000s are the same width as other gear, the top configuration is certainly different and even the depth could be different. You’d want all that gear well protected, without anything putting unnecessary pressure on parts.
No clue if Denon is planning on making cases (they would most likely not produce themselves but OEM a third-party product if they do). If history provides a clue, then I think not. I can’t seem to recall ever seeing a Denon-branded flightcase. But hey, I could be wrong there .