FTDI released a development board for the Vinculum-II (VNC2) inspired by the Arduino. The Vinculo has an Arduino shield pinout, with an extra row of 10 pins on the digital side.
The Vinculo is a dual channel USB Host/Device Controller is targeted at rapid development and prototyping of USB Host/Device interfaces. Vinculo…can be programmed using a subset of standard ANSII ‘C’ using the FTDI free of charge software development environment
Thanks McZ!
I made a quick review of the board on my blog. See it at:
http://embeddednewbie.blogspot.com/2011/02/vinculo-arduino-clone-with-usb-slave.html