Minecraft wiki entry for Development_versions, associated text: Glow Lichen no longer generates at the bottom of the ocean (MCPE-125198).
Strongholds can no longer generate mid-air in large caves.
Underwater magma features are now placed on surfaces under water to allow exploration of underwater caves and aquifers (MCPE-141376).
Glow Lichen no longer generate above ground in Bedrock (MCPE-141412).
Village buildings now carve less terrain around them when placed.
Added feature placement distribution triangle", and changed all features that used "gaussian" distribution to now use "triangle".