Sounds like he is playing but personally I just cannot see it being Pyramid Headliner. Just not the big status act that he may once have been now.
WH perhaps.
I would say that would be too heavy with all of the 3 headliners being "heavy". Typically there is some rock/indie name.
Would see more likely someone like QoTSA or Vampire Weekend (they have been in preselection of the bands)
Havent checked if they are around though.