I am about to fall out the world, but disconnected before I died. Any fix, or do I have to lose all my items?
If you're in the overworld or in the nether, then you glitched through bedrock, and a mod can tp you to your bed or spawn. However if you're in the end, then that's just part of the game, and you have to deal with the loss of your items.
Lol hedgehog1029, but I'll have to say the same as what Magi1053 already has. Sorry EDIT: I can't believe I spelled your name wrong...(Magi1023)
Not the place to talk about the launcher, but no it will not update itself. You will have to download it again.