From Minecraft Wiki
August 3, 2017
1.12.1 is an update for Minecraft released on August 3, 2017. It is not compatible with 1.12 servers.
- Game credits
- Updated game credits to include more Mojang staff
- Credits scroll 50% faster when viewed directly from the menu screen than through the End Poem.
- Removed "Better than Prey!"
- 2 issues fixed
- From released versions before 1.12
- MC-117087 – Class.getSimpleName performance issue with large number of block entities
- Private issues
- MC-119011 – Security issue with recipe book
- "Minecraft 1.12.1 Released" – Minecraft.net