Yes, the shudder only happened from 1st to 2nd I believe. I'm not a car expert. It happened between 20-30 mph when accelerating from a stop. I'm assuming this is 2nd, but could be 1st. No shuddering at higher gears.
Not sure about TSB 11-12-13, but I had the latest TSB performed a month ago, so I'm pretty sure I was updated on everything before I took it in for the shudder problem. Before they replaced the clutch, they also did a DCT reset/re-learn thing which they confirmed didn't fix the problem. It was a bad clutch that wasn't releasing properly at that specific gear.