Sony Ericsson announced today the release through AT&T of a new Walkman phone. The Sony Ericsson W580i is available now.

The Sony Ericsson W580i is available in an array of colors and sports a slim-slider design. It comes with a “shaking” control which lets one flick the wrist to skip from one song playing to another. It supports a variety of audio formats, including WMA, MP3 and AAC and can offer up to 20 hours of music playback or nine hours of talk time. There are also external volume and skip track keys.

Sony Ericsson continues to expand their Walkman mobile phone lineup and feature list by now adding the Walkman W580. The W580i sports the Quad Band EDGE (850/900/1800/1900) connectivity along with music playback, and this time Sony Ericsson has added some additional new features to help with your outdoor exercise routine.

The new mobile phone supports Disc2Phone software to transfer music to an internal 12MB of storage which can be expanded with a Memory Stick card, and TrackID will identify unknown songs whether they are downloaded or even recorded off of the built in FM tuner. …