We have an Alpha release that has prototype support for 10.8.
You are welcome to try it but remember it's an Alpha: it has gone through very limited testing so you are going to install and use it at your own risk!
If you do try it, please post your feedback in the new 1.8 forum:
http://www.displaylink.org/forum/forumdisplay.php?f=45
Best regards,
Carlo