Minecraft wiki entry for Development_versions, associated text: Fixed a bug where bees and other new mobs were missing a non-minecraft: version for /summon commands. (MCPE-58557)
Added new overload for /replaceitem with an option for destroy (the old behavior) or keep (the command will return an error if an item occupies that slot)
Fixed issue where the clear command would not clear damaged tools
/setblock command fails on the new blocks if attempted with non-default state (MCPE-65395)
/setblock command now works for more block states