Hopefully the cart behaves when it finally comes out, my last purchase of a new neogeo game was Vengeance Hunters, which works great but when you put it in a multislot it never gives up its attract mode. So once the neogeo cycles through to vengeance hunters it stays there forever. Brought it up on their discord and looks like they no longer have the guy with the neogeo coding skills to fix it (the cart has a sdcard slot for updates and all too so could be fixed, but they lack the people/staff to do it).
Crossed fingers for this cart, but not overly hopeful