The latest installment of All Tomorrow’s Parties’ “I’ll Be Your Mirror” festival series will take place from May 25-27th at London’s Alexandra Palace. Unfortunately, there has been a shuffle in the lineup. Due to personal reasons, Guided by Voices have canceled their headlining performance, originally set for Sunday, May 27th, 2012. In lieu of the cancellation, however, the festival has tagged legendary outfit The Afghan Whigs to headline, making it their first appearance in 13 years.

There were also more confirmations to the lineup. In addition to headliners Slayer, who will perform Reign In Blood, Mogwai, and now The Afghan Whigs, the three will also be joined by Archers of Loaf, Thee Oh Sees, Wolves in the Throne Room, YOB, Dirty Three, Chavez, Floor, Balam Acab, and newcomers Demdike Stare and Siskiyou. Head on over to Festival Outlook for the full lineup.

That’s not all. The festival also confirmed it will bring its “I’ll Be Your Mirror” series back to Asbury Park, NJ on September 21-23rd, 2012. While a proper lineup has yet to be confirmed, Saturday night’s festivities will be headlined by The Afghan Whigs and curated by frontman Greg Dulli. Tickets will be available early January 2012.

Stay tuned for more details on both lineups.