According to the press release iPod nano delivers up to 24 hours of audio playback or five hours of video playback on a single charge and is encased in a beautiful all-metal design made with anodized aluminum and polished stainless steel, which is also available in silver, black, blue, green and a (PRODUCT) RED special edition.
The iPod announcement comes one day after Apple stock dropped because of fears that their growth may be hampered by the economic downturn.
Reference: http://blogs.digitalmediaonlineinc.com/ipodvideo/