I was digging around Cisco's certification forum today and look what I found:
https://cisco.hosted.jivesoftware.com/docs/DOC-2990
Apparently they are asking for wireless experts to test their beta exam for a CCIE-Wireless written exam to be released later this year! I am wondering if this means that they are planning to make Wireless a full-blown career track with professional level certs as well in the future? In any case, this is interesting news for anyone interested in wireless and it will be interesting to see how much interest it generates!