sorry for the late reply, but if you read the twitter for vestaria it has been metioned a few times, most notably , http:// https://twitter.com/Ks_vestaria/status/1029696858140987392
in this tweet metions it has been already released on steam. Link here: https://store.steampowered.com/app/694770/Vestaria_Saga/
Its a demo version, its exact release is yet to be released
Edit: Apostrophe