Minecraft wiki entry for Development_versions, associated text: Skeleton horses spawned in from earlier versions can be ridden once again. (MCPE-40857)
Removed the distance restriction for phantom spawning, meaning they should spawn more readily now. (MCPE-43736)
Villagers can now properly access the entire village outskirts, without showing frustrated particles because it's too far.
Spawned villagers who are leveled up now start with the preferred profession and won't change when introduced to a new village.