There is now an option available for WMS 2012 and DisplayLink based products.
It's from a company called OSBASE, which is led by an ex-Microsoft graphics driver developer. They've developed a very stable and high performance driver for the new WMS 2012 plug-in model for DisplayLink-based USB terminals.
At Plugable Technologies, we've licensed their solution, and are bundling it with our zero clients:
http://plugable.com/2012/12/20/windo...le-zero-client
In particular, these two:
Plugable DC-125
http://plugable.com/products/dc-125
Plugable UD-160-M
http://plugable.com/products/ud-160-m
Note that OSBASE
http://osbase.com/ has a sample driver available that will work on older hardware (like the DisplayLink-based HP devices). It has a visible "trial" warning, but you can easily try it out. It will be available to both individual buyers and device makers.
Performance and stability is much improved over WMS 2011 - Microsoft has done a great job radically simplifying the new plug-in graphics driver model of WMS 2012.