pre-3.0 release 4 is a beta file of the Minecraft resource pack BlueBlocksCraft Vanilla, made for Minecraft 1.9.1, 1.9.3, 1.10-Snapshot, 1.9.4, 1.9.2, 1.10.2, 1.10, 1.10.1, 1.9-Snapshot, 1.9. It was published on May 26, 2018 and is 2.2 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the BlueBlocksCraft Vanilla resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.