I posted some info about DQ heroes localization earlier today. This is fabulous news. ![Grin ;D](https://vgcollect.com/forum/Smileys/default/grin.gif)
As far as Theatrhythm and any other recent DQ game (X, VII 3D, etc) nothing has been announced. Im pretty sure that X is a no go, VII 3D really should happen and rhythm is probably a no as well. ![Undecided :-\](https://vgcollect.com/forum/Smileys/default/undecided.gif)
Dragon Quest IX sold a little over 1 million copies in the west.
Dragon Quest IV DS games took in 300,000 or less
Dragon Quest Monsters: Joker - which they heavily advertised did even worse.
Even lower sales for the other Dragon Quest games like V and VI
I think Square Enix is done for now sending us DQ games for Nintendo consoles.
I thought there might be a chance to see Theatrhythm because of how well Final Fantasy sold, but I've heard there are even less tracks in the new game. So I doubt we will see it unless they wait until a "Curtain Call" style re-release happens.
I'm almost certain we won't see Dragon Quest X (especially since it is a Nintendo/PC exclusive). I realize it was also released on Android or something, but that won't happen here in the west either.