Not trying to be a jerk by restating this as I know you have a long history of helping others (myself included) with good info on this board, but I think you would agree it is important to have the most accurate info posted. I also understand E9X M3 owners can experience the same exact problem as non-M3 E9X owners with the positive battery cable from the trunk to the JBE. Having said all that, there is no recall for the positive battery cable repair from the trunk to the JBE in the U.S. for the M3 model. The U.S. BMW NA service bulletin you found (SIB610213) specifies models E82, E88, E89, E90, E91, E92 and E93 "Produced from March 2007 to October 2011 with option 823 (Hot climate version)" Option 823 wasn't an option number used or available for U.S. M3 models, so unfortunately the E9X M3 does not qualify for the recall, at least in the U.S.
To double check this, take a look at the U.S. National Highway Traffic Safety Administration (NHTSA) recall document for NHTSA recall # 13V-044, referenced in the BMW NA SIB,
here. Click the plus sign on the right, then click the blue text "23 Affected Products" to see that the only BMW models included in this recall for select years are the 128, 135, 328, 335 and the Z4.
EDIT 1/25/17: There is now a new BMW (U.S. at least) recall for the battery cable for E9X M3 models produced between December 1, 2009 and April 10, 2011. This latest recall is documented under BMW TSB: SIB612616. See this
thread here for more details.
Unfortunately, in the U.S., owners whose E9X M3's were built before December 1, 2009 or after April 10, 2011 still have no recall coverage for this repair as they are neither included in the older non-M3 recall under SIB610213 nor this newer M3 specific recall under SIB612616.