As far as I know, the only Ys games we got here in the US (outside of the original three on SNES and whatnot), were Ys I & II Chronicles for PSP (and I think Windows?), The Oath in Felghana on PSP and Windows, The Ark of Napishtim on PS2, and Seven on PSP. And just recently Memories of Celceta on Vita.
This news makes me happy though. Just recently got into this series and I am loving it.