I already putted the NAP with 802.1x enforcement in production both in wired and wireless networks (really it works great for the wireless ....). I was waiting till final released for 2008, some efforts I managed to configure with both 3 Com and Cisco switches. Really it gives a good presentation for situation of the domain join computers (not to mention security and dynamic switching).
Now I’m having some conflict issues with the GPOs for the wireless networks for domain joined computers but I think I will fix it...
Too much to say for the NAP solution..... a good testimonial for Microsoft for our campus.... Really good job
shkumbini