Upcoming features

1.4.4
1.4.4 (titled "Labor of Love") will feature various balance and quality of life changes. It is planned to be released sometime during 2022.

General

 * One or two new secret world seeds, described by Redigit as "something special for the brave of heart".

Items

 * Several new items:
 * A pet-summoning item named the Resplendent Dessert.
 * A Minecart named the Fart Kart that periodically plays a and releases green particles while moving.
 * A purple-colored variant of glowing moss.
 * A coral furniture set.
 * A new variety of wood and its respective furniture set.
 * A new type of liquid.
 * At least one new painting.
 * Several changes to existing items:
 * Most stackable items will have their max stack limit increased to 9999.
 * Pressing on the Eternia Crystal Stand will skip the remaining wait time between Old One's Army waves.
 * The cost of Defender Medal purchases from the Tavernkeep has been reduced significantly (averaging 33-40% less medals for the majority of items).
 * Sharpened, Clairvoyance, Ammo Box and Bewitched buffs now last until death.
 * Duration of all sentries has been increased from 2 to 10 minutes.
 * Paintings and statues will now glow with the Spelunker buff.
 * Some informational accessories readouts will dim when inactive.
 * The change in 1.4.0.1 to only allow accessories with a visual component to be equipped in vanity accessory slots will be reverted.
 * Projectile Tombstones will deal damage (similar to Boulders) in "a certain seed".
 * Ropes can now overlap with other background tiles like platforms and Minecart Tracks.
 * "Several objects" including banners, heart lanterns, and stars in a bottle can be placed on the underside of platforms without needing to hammer them first.
 * A crafting recipe for the Magic Mirror will be added.
 * Metal Detector will be able to detect Gelatin Crystals.
 * The War Table will grant a buff that increases the maximum amount of sentries, similar to the Bewitching Table.
 * Life Crystals and Mana Crystals can now be placed down.
 * Celestial Sigil
 * Requires 12 of each Lunar Fragment instead of 20.
 * Summons the Moon Lord in 12 seconds instead of 60.
 * Dark Lance
 * Damage increased from 29 to 34.
 * Now inflicts Shadowflame on hit.
 * Now has approximately 15-20% more reach.
 * Drill Containment Unit
 * Mining speed increased.
 * Added ability to remove walls.
 * Frostbrand
 * Now fires its projectile more often.
 * Projectile now inflicts Frostburn.
 * Flairon
 * Detection range for bubbles to chase after enemies increased by 30%.
 * Bubbles now last 33% longer.
 * Hive Pack
 * Increases fire rate of Hornet summon.
 * Increases damage and defense penetration of Wasp Gun.
 * Scourge of the Corruptor
 * Now has more consistent and higher overall average number of Tiny Eaters.
 * Tiny Eaters now move and chase enemies faster.
 * Star Wrath
 * Projectile stars will now use their own independent immunity timer (allowing each star to hit an enemy; previously only one could hit at a time).
 * Lunar Portal Staff
 * The Lunar Portal Lasers now move much faster.
 * True Excalibur
 * Now has a longer reach and a new visual effect when swung.
 * True Night's Edge
 * Fires a new projectile.
 * Terra Blade
 * Fires a new projectile.
 * The Angel Statue will "do something."
 * A purple bag. Nothing more about it is known.
 * Some kind of mechanism which allows large groups of blocks and walls to be toggled between being visible and invisible.

NPCs

 * There is one more possible name for the silver Cat, Tula.
 * There is a new town pet coming to the game, Town Slimes.
 * Slime bonus drops may now include Fallen Stars.
 * The Angler will now have a chance to give an extra furniture loot drop (in addition to his main reward) upon completing a quest. The odds of this will increase as the player completes more quests.
 * Drop rate for all rare pirate drops have been doubled on regular pirates and Pirate Captains.
 * The Flying Dutchman now has a dramatically increased chance to drop any of these items (in some cases, ×10 as likely), and will always drop 1 piece of golden furniture.
 * The Goblin Summoner may be renamed to Goblin Warlock.
 * New Macaw critters found in the Jungle surface.

World generation

 * Bast Statues can now be randomly found placed inside Desert Underground Cabins, in addition to being found inside chests.
 * A Plantera's Bulb will now spawn immediately after defeating all three mechanical bosses.

Miscellaneous

 * A new death message: "&lt;player name&gt; became an astronaut."
 * You can exchange your pet with a Pet License.
 * Classic Mode is now the default selection when creating a new character.

Cross-play
With Journey's End being designed to be a conclusion to Terraria, no new major content updates are planned for the. However, Re-Logic has stated that they would like to implement cross-play, allowing Multiplayer between the. This will require feature parity between all three versions to function properly, as Cenx has stated.

Terraria 2
In the past, Redigit has mentioned plans to 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, including whether it still exists.

Some features and ideas have been referenced as being for Terraria 2, but it's unclear to what extent this is merely brainstorming or actual development:
 * Planting and harvesting crops, similar to potion herbs but for different purposes, has been called a "Terraria 2 idea."
 * Some things have been referred to as being for the "next game", which may or may not be Terraria 2:
 * Mermaids.
 * Smarter town NPCs, able to walk through stairs and sleep in beds.