Minecraft wiki entry for Development_versions, associated text: Bee spawn eggs can now be edited in content packs.
Fixed an issue that was preventing custom blocks from being used in add-on packs. (MCPE-63121)
Fixed an issue with add-ons that could cause the minecraft:timer component to fire prematurely in some conditions.
Fixed an issue that was causing particle animation to become inverted.
Using the minecraft:pushable component in add-ons will no longer break older content.
Fixed an issue that was preventing animation controllers in behavior packs from running on dedicated servers and Realms. (MCPE-59881)