Kim Shattuck, the frontwoman and guitarist for Southern California punk trio The Muffs who also played with ’80s rockers The Pandoras and took a brief turn as the Pixies’ post-Kim Deal bassist, died on Wednesday from complications of ALS, her family and bandmates announced. She was 56.

The Pixies today announced the release of the third in their series of self-released vinyl-and-digital EPs over the last seven months, and now will compile all 12 new songs released since last summer’s “Bagboy” digital single as a full-length album that will make the band’s new music available on CD.

The Pixies are ringing in 2014 with a second batch of new songs, today releasing a second four-song EP of brand-new material and debuting the video for one of the songs: the rocker “Blue Eyed Hexe,” which the band debuted last September at a warm-up gig.

Without formally acknowledging the departure of Kim Shattuck following the band’s fall European tour, the Pixies this morning announced her replacement for shows in North America, Europe and South America next year: Paz Lenchantin, who played in A Perfect Circle and Billy Corgan’s brief post-Smashing Pumpkins outfit Zwan.

Just days after completing their first tour without original bassist Kim Deal, the resurgent Pixies apparently have decided to part ways with her touring replacement, Kim Shattuck of The Muffs, who took to both Facebook and Twitter tonight to announce she was “super disappointed to learn that my time with the Pixies ended today.”

The resurgent Pixies made their second TV appearance in a week last night, this time plugging in on the BBC’s “Later… with Jools Holland” to tear through new song “What Goes Boom” off the band’s just-released EP-1 in advance of tonight’s appearance at the iTunes Festival in London.

The new Pixies lineup got its national television debut last night as the band appeared on “Late Night With Jimmy Fallon” in advance of its four-night run in New York City, performing new single “Bagboy” on air and then sticking around to play “Indie Cindy,” off the just released EP-1, as a web exclusive.

The Pixies have been rehearsing for their upcoming tour with new bassist Kim Shattuck of The Muffs in Los Angeles this past week, so perhaps it’s no surprise the band headed out last night for a last-minute, surprise warm-up show at the Echo — where the band debuted six of their new songs.

With their fall tour set to open next week with a club run in Los Angeles, the Pixies today released the first in a series of new EPs — a four-song set cleverly titled EP-1 that’s available as a digital download or on limited-edition 10-inch vinyl — and premiered the music video for one of those songs, “Indie Cindy.”

Over the past few weeks, the members of the Pixies — Black Francis, Joey Santiago, David Lovering and new bassist Kim Shattuck — have been treating fans to photos and video through a collection of new Twitter, Vine and Instagram accounts named “The Actual Pixies.”

The Pixies are now set to debut their new Kim Deal-less lineup at Chicago’s Riot Fest this September, joining a bill that includes The Replacements, Blondie, Violent Femmes, Mission of Burma, X, Dinosaur Jr and Peter Hook, among many others. The Pixies were added today alongside Joan Jett, TSOL and Suicidal Tendencies.

The Pixies today followed up last week’s free release of a surprise new track with more revelations, namely that the band is about to embark on a “massive global tour” to debut material off its follow-up to 1991’s Trompe le Monde with The Muffs frontwoman Kim Shattuck replacing the departed Kim Deal.