They looked like the new T100 with the blackout shafts, but I read somewhere he plays a miz 3 iron

According to golfwrx.com, as of the Sentry ToC, Cam Smith had Titleist driver, 2 fairways (pictures of loft don't match the text, though), a Miz 3 hybrid, and T100 black 5-9 (interestingly, the photo shows a black finish, 4 iron, too). He had 4 SM9 wedges as well as a 009 (yes, this is drool worthy!).

Golf Digest is wrong. He did have a miz Pro Fli Hi 3 iron, which admittedly is a great looking club. All other clubs were Titleist.

This time of year WITB's can change every second.
Players are trying new things during the early events, their bags may differ from day to day.
So when you see a WITB and it does not look like what the player is using he may have just left those clubs in the locker room and chose a different option for that day.

Cheers,
Dr. K

According to his list of clubs off the "tour" which lists the Ambassadors equipment (Titleist);

Golf Ball: Titleist Pro V1x
Driver: TSi3 10.0° Fujikura Ventus Blue 60 X
Fairway Metals: TSi2 15.0° Fujikura Ventus Blue 80 X and TS2 21.0° UST Mamiya Elements Red 8F5 X
Irons: NEW T100 5-9 KBS Tour 130 Custom Matte Black X
Wedges: NEW Vokey Design SM9 46.10F, 52.08F, 56.08M, 60.10S KBS Tour 130 Custom Matte Black X
Putter: Scotty Cameron 009M tour prototype

The closeup of his bag at the players it appeared to be all Titleist in his bag.

According to www.golf.com Cameron Smith plays a miz Pro Fli-Hi 3 iron with a KBS tour 130 custom matte black X shaft.