It's goddamn 2017 and XSEED announces a Windows only Falcom game? Come on XSEED, porting these to Mac is much easier and cheaper than to port anywhere else.
Day 1 cause Falcom
I bought Xanadu Next for the same reason, just trying to support localizing Falcom games, and absolutely loved XN despite it looking like an old PS1 game.
Hoping Zwei gives me the same feels, the mechanics sound fun and quirky.
XSEED hasn't said anything to confirm or shoot down dual-voice for this game. I don't know if Falcom's recently made a new seiyuu contract that's made it easier for Aksys and NISA to use Japanese VA in Tokyo Xanadu and Ys VIII, but I'm also not sure if that could even apply to Zwei II since the original voices probably came from a different agency or were contracted individually.
Anyway, game looks great as ever, though I hope they're trying to get this up to 60 FPS, even if the game's very playable at 30 in 1080p widescreen.