Final Fantasy XIV Endwalker has been announced as the fourth expansion for the game, set to be released in late 2021. However, I don't have information about any subsequent expansions that may have been announced or released after that time. The developers of Final Fantasy XIV, Square Enix, have not made any official statements declaring Endwalker as the final expansion. It's always possible that there could be additional expansions or content released in the future, but the specifics would depend on the plans of the game's developers. For the most up-to-date information, I recommend checking official sources and announcements from Square Enix or following the game's official channels.