Korg Unlimited Track Recorder

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This looks like the a step forward in the handheld recorder market. Nice set of features too:

• Pocket-sized, portable, and battery powered, the SOUND on SOUND multitrack recorder provides on-board rhythms, effects, and an infinite number of overdubs for truly creative recordings.
• With the built-in speaker and an internal high-quality stereo mic, you can capture and review your recordings instantly, without the need for any additional equipment.
• Advanced recording features include unlimited undo/redo, loop recording, and Sound Stretch – adjust the playback speed without changing the pitch.
• 100 on-board effects – powered by Korg’s proprietary REMS technology – to enhance your recordings using a wide range of instruments.
• Record along to 50 preset rhythm patterns, covering a broad variety of styles.
• Record and save up to 200 songs in WAV format.
• High-performance guitar, bass, and chromatic tuners are built in.
• Records up to ten hours on a pair of AA batteries.
• Wedge-shaped design is easy to use as a hand-held recorder or on a desktop.
• KORG AUDIO UTILITY software provides format conversion and audio CD creation. Downloadable free from Korg.com.

It should be available in April for around $400. Via Synthtopia.