Wiki 9Minecraft Wiki 9Minecraft

Minecraft 13w39a

Weekly work-in-progress build. Things break and get removed again. Version facts below are read from Mojang’s own files — the official manifest plus the version.json inside the jar.

Contents (5)
  1. What changed in 13w39a
  2. New files in the game
  3. New in-game text
  4. Development cycle
  5. Neighbouring versions

Java What changed in 13w39a

Everything below is measured by comparing the game files of 13w38c with 13w39a — not copied from patch notes.

Minecraft did not ship a data generator until January 2018, so there is no registry of blocks and items to compare for a build this old. What is below is read from the game’s own client.jar: the text the game displays, and the textures, models and sounds it ships. New blocks and items almost always show up in both.

New files in the game

KindAddedRemovedTotal
Textures+1614895

Textures added: blocks/double_plant_fern_bottom blocks/double_plant_fern_top blocks/double_plant_grass_bottom blocks/double_plant_grass_top blocks/double_plant_paeonia_bottom blocks/double_plant_paeonia_top blocks/double_plant_rose_bottom blocks/double_plant_rose_top blocks/double_plant_sunflower_back blocks/double_plant_sunflower_bottom blocks/double_plant_sunflower_front blocks/double_plant_sunflower_top blocks/double_plant_syringa_bottom blocks/double_plant_syringa_top blocks/red_sand items/minecart_command_block

New in-game text 5

KeyText
disconnect.loginFailedInfo.invalidSessionInvalid session (Try restarting your game)
disconnect.loginFailedInfo.serversUnavailableThe authentication are currently down for maintenance.
item.minecartCommandBlock.nameMinecart with Command Block
tile.sand.default.nameSand
tile.sand.red.nameRed Sand

Development cycle

This build was part of the run-up to 1.7.2. Everything tested here landed in that release.