In addition to that remake
NIS has announced, by way of the above teaser trailer, that a full sequel for The Witch and the Hundred Knight is in the works. This is in addition to the PS4 remake of the first game, entitled The Witch and the Hundred Knight Revival.
The publisher hasn’t released the sales numbers for the series, but it’s likely popular in Japan, hence the multiple new iterations unveiled this year. There’s no word yet on a localization for either of them.