There are already a few that will b pretty obvious:
Daft Punk (how could they not lol?)
Nine Inch Nails
Adding a second Arcade Fire set billed as The Reflections
Any other late adds? Could this be the year we get Prince again?
What are the odds of another hologram?
Tool and Tame Impala
Go smoke some more drugs you fucking burnout none of that shit is gonna happen. You look like Adam Corolla if he was 20 years younger. And a rapist.
That said, a second Arcade Fire set would be nice but only if they were on the same day. I don't want to have to dress up like an Amish person for more than one day.
A Perfect Circle