You'll be waiting a while.
It will be in the 2 weeks before Xmas at the earliest.
Given there is a huge marketing push to sell early bird tickets right now, on no news at all, that really says they don't have a great lineup.
Really feeling like the Fallout Boy, Kings of Leon, Kendrick Lamar 2018 announcement year. Went hard pushing early ticket sales on no news, dropped the lineup with no fanfare on a random Tuesday in February at 07:30am (I remember cause I was sat on a flight when it was released, about to takeoff and landed to about 50 pages of meltdown.