The spawn and respawn points were linked, which made them a little annoying to configure. You can now configure a respawn rule (where to go when you die) separate from the spawn point (where you land teleporting to the world). This is done with the new /world respawn set of commands, which include:

• Respawn at a portal
• Respawn at a world
• Respawn where you died
• Respawn at the current player position where the command is executed

Other changes:

• Teleporting to a [portal] sign now guarantees put you on solid ground, supporting more than 2 blocks above the sign, and including slabs.
• Fix the my_worlds command prefix not working right
• World configurations are now auto-saved, so they aren't lost if the server crashes
• Reduce overhead caused by the CreaturePreSpawnEvent handling