26.1 Release Candidate 1 (known as 26.1-rc-1 in the launcher) is the first release candidate for Java Edition 26.1, released on March 19, 2026. This is the first release candidate released in 2026 and the first release candidate to be released with only an unobfuscated build. Full changelog: https://minecraft.wiki/Java_Edition_26.1-rc-1