Upcoming features

1.4.1
1.4.1 will be the last content update for Terraria, according to Re-Logic.

Items:
 * Possibly an item made by combining the Royal Delight and the Regal Delicacy that summons both pets.
 * Multiple vanity sets from the winners of the.

Miscellaneous:
 * A new music theme from Resonance Array 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.
 * Localization.

1.4.1.1
The content or release date of the 1.4.1.1 update is currently unknown.

1.4.1.2
1.4.1.2 will be the final update of Terraria. It will be released one week after 1.4.1.1. The content of the update is currently unknown.

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