Here is the December 21, 2007 New Product Announcement
http://www.kenwood.com/en/news/20071221.html
It does not say much in detail about the technology.
I did find this below elsewhere on the web.
Kenwood has developed the
next generation 6.25 Khz
digital communication systems.
Kenwood Digital System Features:
Electronic S/N validation
Monitoring of the Priority ID
Priority Call
Emergency Call
Waiting and Log Calls
Remote Addition of Groups
Remote Verification of the System
Silencing and Remote Radio Kill
Short and Long Messages
GPS Locator
Due out the last quarter of 2008
I hope its compatable with Icom's 6.25Khz digital system.
That would be a win win situation for customers.