Ana can sleep things that she never used to be able to sleep before (even though it doesn’t make them inactive)
Also when Ana sleeps a player it can essentially stop them from going through a choke and can block ana into a corner if she sleeps someone who is trapping her.
I just spent a good amount of time testing this with a friend in a custom game.
Things she can disable with sleep:
Symmetra Turret (disabled when slept)
Torbjorn Turret (disabled when slept)
Things she can sleep BUT they aren’t disabled and just show zzzzz:
Orisa Ult: Supercharger (shows zzz but still damage boosting the team)
D.VA Bomb (bomb still goes off, but it’s laying on the floor sleeping)
Baptiste Immortality field (shows zzzz but still protecting his team)
Symmetra Teleport (sleeping but still go through it)
https://imgur.com/a/DLZKolc
Gallery ^