Taken from the RouterBoard BIOS v2.9 changelog from http://www.routerboard.com/files/rb-2.9/CHANGELOG:
What’s new in 2.9:
*) added support for RB192;
So, what’s a RB192, or is that a typo?
It is mips based RouterBoard with 9 ethernet interfaces and two mini-pci slots.
You can see the wideo on all new MT boards here:
http://www.tiktube.com/2007/06/22/routerboard-roadmap/