I think TGM4 was originally going to be on sega ringwide. pretty sure ringedge is overkill. but sega may not be the company they parter with. In my opinion they should have went to sega in the first place for the series, since it's clearly an evolution of sega tetris, but oh well.
For anyone a bit more in the loop or actually following the Japanese twitter, has there been any update on this? Don't really consider no news to be good news when it comes to ARIKA...
From Poochy's Twitter (for decent translations): PS4 release would be too expensive, though they said to "ask IKD about Steam". IKD = Tsuneki Ikeda, CEO of CAVE, ported Mushihimesama to Steam The distributor said it would be hard to deploy within Japan (but it's still not time to panic) Other than that, the tgm_series Twitter has been retweets of screenshots and Mihara moaning about emulation. Basically business as usual, it seems.
Wait, IKD did the PC port of Mushihimesama himself? Awesome. Glad to see he's still at least somewhat hands-on with shooters.
So seems home #tgm_series is a go, and provided it sells well the series will continue (new tgm games) and be considered legit by the guideline.