If you were keeping track of the news from CES 2004, this shouldn't be anything new to you.

Even so, all of this information is available in English already; so I will just provide some links for your convenience.

Aiwa released a fleet of information o­n their new mp3 players o­n January 14th.

Since this news has been available to the English speaking public since the debut at CES 2004 [1] I won't bother translating it, unless someone requests something specific.

Also, this information is available o­n the USA Aiwa site:
http://www.us.aiwa.com/ [2]

Here are the official Japanese press releases, which contain some nice images of the devices:

Aiwa brand renewal via USB Audio product line [3]

Pavit and other USB Audio players [4]

HDD Players, et. al [5]

USB Speakers [6]

English Press Release:
http://www.sony.net/SonyInfo/News/Press/200401/04-002E/ [7]