WAP/WML/WBXML

Sorry to bring up an old issue, but I searched the archives and this
hasn't been discussed in at least a few months...can anyone please tell
me what they believe the current state to be in the US regarding the use
of XML in wireless devices?  Also, is anyone in the US using
WAP/WML/WBXML?

Thanks in advance,
Joe Chiusano
Booz | Allen | Hamilton