Here is a message from DANGEN Entertainment on the title change:

Dear Vestaria Saga fans,

Following Vestaria Project’s decision to rebrand Vestaria Saga Gaiden, the Steam page has also been updated accordingly for its new title: Vestaria Saga II: The Sacred Sword of Silvanister.

This version of the game will be enhanced to include the following new features:

• New music.
• Resolution upgrade (now 1280 x 720).
• New bonuses for completing the entire game.
• Battle results added to the end of every map.
• The ability to save every turn, as well as an auto-save function.
• Various new functions as a result of updating the game to the latest version of SRPG Studio (as of December 2021).
• A new single, rebalanced difficulty, including new items, stat buffs, skills and more.

Please stay tuned for more news and announcements concerning the update of Vestaria Saga II: The Sacred Sword of Silvanister, and we appreciate your continued support of the Vestaria Project series!

Vestaria Saga II: The Sacred Sword of Silvanister is due for PC via Steam in 2022.