Minecraft wiki entry for Development_versions, associated text: Portal blocks placed with /setblock or /fill commands that are not part of a valid portal structure will only exist for 1 second before they are removed.
Foxes will no longer take damage when falling on berries. (MCPE-82273)
Text and background for the title command (Title, Subtitle, and Actionbar) have been adjusted and spaced out.
Dressing room now shows cached Character Creator items when offline.
24 bit PNGs without an alpha channel are no longer accepted as valid custom skins. (MCPE-50094)