No concrete info has been revealed on those type of functions yet. Looks like we are going to have to wait 9 days till the video to get those answers.
During the Ian Duffell interview in April, there was some mention that when it is runs out of battery it will home back to the user, so that they may take it out of the air, or will eventually drop. However a lot seems to have happened in the last 2 months, and this may have change for all we know. This can be found 8:03 mins into the interview:
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