as of today 04-DEC-2007, the treo 750 in the US is upgradable by the carrier (AT&T) to windows mobile 6.
while this update has been available for UK roms for a while via vodafone, it is now 'officially' available and supported by at&t. if you have a treo 750, go get the update from here.
i just posted the missing app.config file for the final mobility touchdown lab "putting it all together" over at the mobility touchdown team blog. go get it :-)
Thanks to all who joined WoodyP and myself in Las Vegas for the mobility touchdown class. I thought I'd braindump some of the links and cool stuff we talked about during the 3 days...so here you go:
check back on my blog or the mobility touchdown blog frequently for some good information.