Had a dig at what splits might look like (for Leeds):
Fri -
Main - Chase and Status / Florence / Role Model / Blossoms (SG) / The K's / Arthur Hill / Dylan John Thomas / Westside Cowboy / The Clause
New Stage - Kneecap / Kettama / Duke Dumont / Holly Humberstone / Paris Paloma / December 10 / Violet Grohl / Alex Spencer / Kilu
Sat -
Main - Charli XCX / Fontaines / Skepta / Geese / Skye Newman / Keo / Overpass / Rose Gray / Unpeople
New Stage - Declan McKenna / James Marriott / DJ EJ / Florence Road / Clementine Douglas / Cardinals / Bleech 9:3 / Vilanelle / Day We Ran
Sun -
Main - Dave / Raye / Sombr / ??? (Gunna at Reading) / Kingfishr / Nine Vicious / Maisie Peters / Slayyyter / Clara La San
New Stage - Jade / Josh Baker / Rossi / Absolutely / Speed / Gurriers / Basht / Cruz Beckham & the Breakers / Ruby Roberts
I'm guessing alongside the Warehouse there's likely going to be another stage as there's a number of smaller acts not included in those two stages above (possibly just BBC Intro)