Downloading holdout Led Zeppelin announced early this morning that on November 13th, they would finally release their entire catalog to "all" digital music services. From I to Physical Graffiti to How the West Was Won, the Zep discography will be available for both full-album purchases and a la carte downloads. The arrival coincides with the release of LZ's new greatest-hits album Mothership, which will come out on double-CD that same day -- just thirteen days before the band's big reunion show in London. "We are pleased that the complete Led Zeppelin catalog will now be available digitally," guitarist Jimmy Page said. "The addition of the digital option will better enable fans to obtain our music in whichever manner that they prefer." In addition to the MP3s, Led Zeppelin has officially joined the twenty-first century by striking up a deal with Verizon Wireless to start distributing ringtones later this week. Because no cell phone is complete if it's not screaming out the opening lines of "Black Dog" when it rings.