miHoYo has recently shared that Genshin Impact’s remaining four unreleased locations will be released over the next four years.
During the all-digital 2021 Game Developers Conference, miHoYo CEO Haoyu Cai revealed some details about the game in his conference called “Genshin Impact: Crafting an Anime Style Open World”. According to Pokde, the company will focus on the developments of characters and the open world environment. The developers also plan to launch all seven regions of Teyvat within the next four years.
"Although Genshin Impact has been online (since 2020), we are still developing future content. We just finished the three nations (out of) seven, and the third one, Inazuma hasn't been updated yet. It will take us another four years to finish all the seven nations in Teyvat." said Cai.
With the most recent update, players can explore the new Inazuma alongside Mondstadt and Liyue. If the release of the remaining locations go as planned, this likely means that Sumeru will be unlocked next year, Fontaine in 2023, plus Natlan and Snezhnaya in 2024 and 2025, respectively.
Additionally, miHoYo has recently announced a new playable character - Aloy from Horizon Zero Dawn - that will join Genshin Impact in October.