Appleinsider notes that Apple has filed for trademarks for two new phrases with the Hong Kong Trademark office. These include:
iPod Hi-Fi - filed on September 20, 2005. Trademark description mirrored here
iPod Boombox - filed June 13, 2005. Trademark description is mirrored here.
Both products are classified in broad categories of computers, hardware, peripherals, etc... Appleinsider had previously claimed that an iPod Boombox and other iPod companion products were due from Apple at Macworld San Francisco. While the date may not have been accurate, these trademarks suggest these products are under consideration by Apple.