Upcoming features

1.4.1
1.4.1 will be the last content patch for Terraria according to the developers.

Items:

Miscellaneous:
 * Multiple vanity sets from the winners of the Terraria: Journey's End Vanity Contest.


 * One more music theme from Re-Logic composer Scott Lloyd Shelly.
 * 11 new achievements including:
 * A golf achievement.
 * Achievements for playing certain songs on the Rain Song or Stellar Tune.
 * Performance optimization for the macOS and Linux operating systems.

1.4.1.1
1.4.1.1 will be an update for Terraria with a release date of 1 week following 1.4.1. The content of the update is currently unknown.

1.4.1.2
1.4.1.2 will be the final update of Terraria. The content of the update is undisclosed.

OST. Volume 4
The Final Volume of the soundtrack


 * Will come as an update for steam soundtrack owners

Terraria series
Following the release of the Terraria 1.3 update, lead developer Redigit had moved on to working on another project, though developers Yoraiz0r and Skiphs were continuing to update Terraria. Redigit returned to work with the team to develop 1.3.5, heavily involved in 1.4.

A spin-off of Terraria, Terraria: Otherworld, was under development, until it was cancelled.

Redigit stated that he plans to later release Terraria 2, a separate game from the canceled Terraria: Otherworld, although little information is known about the nature or content in the possible upcoming sequel.