Board Thread:News and Announcements (ADMINS ONLY)/@comment-5762645-20140222044949/@comment-5762645-20140225214742

Themcpemon wrote: will my celium and pistons and other stuff be added? Mycelium will probably not be added, since they're only adding a limited number of new biomes. But it is possible!

As for pistons, it's looking like those and other redstone-related items will be released sometime around 1.0.0, so stick around for that!