I talked to the service manager before buying my 2012 and he printed me off the only TSB for the new manuals. Thanks to JeepCares from another forum I am able to just paste it here for you.
Here's some (edited) info from the Service Bulletin:
GROUP: Transmission and
DATE: January 13, 2012
Manual Transmission Pops Out Of 2nd, 4th, And 6th Gear Positions
This bulletin involves installing a new shifter detent spring and transmission outer shift lever boot and on some models, the inner shift lever boot will be replaced as well.
2011 - 2012 JK Wrangler
NOTE: This bulletin applies to vehicles equipped with manual transmissions (Sales Code DEH).
The outer shift lever boot may vary in thickness causing the gear shift lever to inadvertently pop-out-of-gear for 2nd, 4th, 6th gears. It can also occur in reverse at times as well. This condition is more prevalent during periods of cold weather when the upper shift boot can become less pliable (depending on thickness) and reacts against the shift lever possibly causing a pop-out-of-gear condition. This condition usually corrects itself once the cabin temperature normalizes and the boot pliability increases. In addition, vehicles built between July 25, 2011 (MDH 0725XX) and July 28, 2011 (MDH 0728XX) may have been built with an inner shift lever boot that can negatively affect this condition.
1. Verify that the outer shift lever boot has not been trapped under the shift knob or pushed too far down the shift lever. The boot should be allowed to slide freely on the shift lever. In the neutral position, there should be an approximately 50mm (2 inches) of clearance between the shift knob and the upper boot end. If the boot is trapped, remove the knob to release the boot. If the boot is too far down the shift lever, pull the boot up so that there is approximately 50mm (2 inches) of clearance between the shift knob and the upper boot end.
2. Slide the shift lever back towards the seat and pull the shift knob in an upward motion with a "quick" snap to remove the shift knob.
3. If removal of the shift knob by hand is not possible, wrap a shop towel or equivalent around the base of the shift knob and using puller C-4333A-1 or equivalent and slide hammer, remove the shift knob from the shift lever .
4. Using a trim stick C-4755 or equivalent, separate the outer shifter boot from the console bezel and remove the boot.
5. Verify that the inner shift boot is secured properly to the shifter sled, the center console cross rib structure does not contact the inner shift boot in any gear position, and electrical connectors and wiring harness in the area of the inner shift boot do not impede shift lever movement or get trapped between the inner boot and shift lever during shift lever actuation.
6. Perform the Repair Procedure if both the inner shift boot and outer shift boot shows no signs of causing interference with the shifter.
(diagrams, figure and repair not included or referenced)
There are 3 diagrams that are included with the copy and paste job. Oddly all the pictures show the old type of Boot. It never really points out what the Inner Boot is. Vehicles built between July 25, 2011 (MDH 0725XX) and July 28, 2011 (MDH 0728XX) are going to get a replacement Inner Boot if they come in with a problem.
- Shift Lever - (1-Transfer case shift knob 2 -Transfer case shift Lever 3 - Transmission Shift Knob 4 - Transmission Shift Lever 5 - Transmission Outer Shift Boot)
- Shift Knob Removal - Shows a slide hammer, Special Tool C C-4333A-1, Shift Knob, Shop Towel
- Outer Shift Boot - Points out Center Counsel is the ring around the boot, Outer Shift Boot
Just so there is no confusion this is a picture of a outer shift boot. The rubbery cover of the stick shift. The 2012 model boot is more smooth.