They're joined by Factory Floor, The Heads, Jacco Gardner, Jane Weaver, K-X-P, Joel Gion, Karen Gwyer, Dengue Fever, Carlton Melton, Indian Jewelry, Lumerians, Black Devil Disco Club and more.
Also announced is the lineup for the Sacred Bones vs. BYM Records collaboration; names confirmed include Blanck Mass, Destruction Unit, The Ganjas, Vuelveteloca, Chicos De Nazca and The Holydrug Couple.
Newcombe's full schedule as artist in residence will be shared soon.
Liverpool International Festival Of Psychedelia will take place 25 and 26 September. Tickets are on sale now and you can grab 'em from here.
Watch the festival's new trailer below, and then have a look down for the full lineup so far.