I don't notice this SO much, but what I have noticed since getting the 12b37 update applied to my DCT is that when using cruise control I'll have slight hiccups. The RPMs will surge often less than 100, but it's as if the car has lost power for that SPLIT second, then regains it's composure and all is well for another 20-30 seconds. I have since stopped using cruise control because it bothers/worries me. My dealership did nothing for me.
2012 SGM SEL Sedan 303a w/o Nav | Job 1 built 6/2011
FSWERKS Cool-Flo w/ ITG Filter | FSWERKS Stealth Exhaust | 17x7.5 Axis Sport XMX Graphite wheels
Sonic Crew #28 | Rally Revolution #117