CEA shows KSNW broadcasting a DTV signal Dec 1, which corresponds roughly to what Al Buch, former GM at the station, had been telliing me, which means they should be installing their transmitter now. It takes a month or so to get things "dialed in". For sure, them being the last local station to go digital has to sting their engineers a little. On the other hand, NBC offers (by far) the least amount of programming, so one can hardly blame them for not rushing to be first.
KSNW will be KSNW-DT, Fox will be KSAS-DT, UPN will be KSCC-DT.
KSNW will broadcast on physical channel 45, which will be "mapped" to 3-1.
KSAS will be channels 26 and 24-1 (18-1?)
KSCC will be channels 35 and 36-1
This information can be found at Wichita/Hutchinson TV Directory