Line 6 and D’Addario announced today at Apple’s Worldwide Developers Conference the development of the MIDI Mobilizer, a portable Musical Instrument Digital Interface (MIDI) device, and Planet Waves Rig Remote iPhone software for use with Apple iPhone and iPod touch using OS 3.0.

“With the MIDI Mobilizer, the iPhone becomes the most portable and versatile editor and tone storage device for your Line 6 gear,” remarked Line 6 co-founder Marcus Ryle as he demonstrated a prototype this morning at Apple’s annual Worldwide Developers Conference.

When used with Rig Remote, MIDI Mobilizer gives guitarists the freedom to control Line 6 Variax digital modeling guitars and Vetta II digital modeling amplifiers.

There isn’t much detail available yet on MIDI Mobilizer yet, but it looks like iPhone 3.0 WILL kick ass for music after all.

Planet Waves’ Rig Remote app features an graphical display that takes a nod from the Line 6 software commonly used to adjust Variax and Vetta II tones via personal computer. The iPhone display and touch screen make it simple to scroll, choose and adjust models of amps, guitars, pickups, pickup placement, alternate tuning and more. Guitarists can easily save their favorite settings and apply them to any Variax guitar or Vetta II amplifier.

MIDI Mobilizer and Rig Remote 1.0 are currently in development, with pricing, availability, and more detail on the complete feature set to be announced at a future date.