Minecraft wiki entry for Development_versions, associated text: Vertical field of view is no longer halved in horizontal split screen, making items such as book & quill easier to view when playing in split screen.
Tweaked surrounding terrain for structures such as villages during world generation (MCPE-145659).
TNT no longer disappears when ignited with the 'TNT Explodes' game rule disabled and the 'Fire Spreads' game rule enabled (MCPE-82485).
Gravity affected blocks now fall on top snow when placed above it instead of hovering over it (MCPE-151407).