It sounds like there will be a limited time span to have the repair free of charge.
"BMW expects to begin and complete owner notification in October 2011.
Expenses for repairs performed prior to December 18, 2009 or more than 10 days after the date of last owner notification letter sent by BMW are not eligible for reimbursment."
The following link has some PDFs with more info.
http://www-odi.nhtsa.dot.gov/acms/do...romPublic=true