Agree the headliner announcement is very good but if the festival is becoming significantly more EDM-focused then they needed to make people aware of this before they start selling tickets to them.
If the intention is to still deliver live music, alongside digital stuff, then your first announcement should reflect that. This announcement didn't particularly.
I get that if they're going to announce new stages and experiences that are digitally focused, they need to have some digital acts signed-up but this announcement will have come as a shock to a lot of people who don't frequent this forum. And the festival hasn't reassured them in any way that live music will still have its place at the festival.