It's officially called
Grandia II: Anniversary Edition.
I love how the visual comparison is with the Dreamcast version not the PC version which already exists.
Other than the Hard Mode there's nothing new. I don't really see why anyone who already has
Grandia II would pay $20 (or even $15 until 31 Aug 2015) to get the game again.
Oddly enough, according to many complaints on the Steam forums the game is locked at 30 fps. The original PC version was not.
The word is the Anniversary Edition is a port of the Dreamcast version not a re-release of the original PC version. Which is a very strange decision.