First up on Sept. 27 will be the EP "Music for 'Bubble'" via Pollard's Fading Captain label.

Former Guided By Voices frontman Robert Pollard has revealed details of several upcoming projects, including a highly anticipated second volume of the "Suitcase" archival series and an accompanying vinyl "Briefcase" release with extra tracks.

First up on Sept. 27 will be the EP "Music for 'Bubble'" via Pollard's Fading Captain label. According to the artist's official Web site, Pollard was approached by director Steven Soderbergh to record music for his upcoming film "Bubble," which arrives this fall in U.S. theaters. The EP sports four full-band tracks and two instrumentals.

Due Oct. 31, the material on the four-disc, 100-track "Guided By Voices: Suitcase II -- American Superdream Wow" ranges from the late '70s through this spring, and, as on the first volume, credits each song to a different band depending on the musicians involved.

The full track listing has not been announced, but the set includes "I Am Decided," which was later recorded by the Amps, as well as tracks from Ben Zing, Modular Dance Units (M.D.U.) and the Fake Organisms. The first 900 copies of the box set will be autographed by Pollard.

The vinyl-only "Briefcase 2 -- The Return of Milko Waif" includes 16 tracks from "Suitcase 2" such as "I Am Decided," "Mannequin's Complaint," "Perch Warble," "You're Not the Queen Anymore" and "Lonely Town." The collection also boasts two tracks not found on the box set: "Lion W/Thorn in Paw" and "Superwhore," the latter recorded with Steve Albini.

In related news, Pollard will be on hand for book signings the week of Nov. 14 in New York and Chicago to coincide with James Greer's upcoming biography of the band, "Guided By Voices: A Brief History -- Twenty-one Years of Hunting Accidents in the Forests of Rock and Roll." The book will be released in late October or early November via Grove/Atlantic and includes an introduction by Soderbergh.