Bethesda announced today that Elder Scrolls Legends would no longer be receiving any new content, at least in the West. For Asia, since another company handles the game, so it will continue to receive updates.
Bethesda will still be supporting the game, and it will remain online (for now at least), as well as still receive events, and monthly reward cards, and all that jazz. Everything except new card sets.
For the full announcement, head over to the game’s subreddit.