Apple will provide a new, redesigned USB-C charge cable, free of charge, to all eligible customers. This program also covers Apple USB-C charge cables that were sold as a standalone accessory. For MacBook owners who provided a valid mailing address during the product registration process or Apple Online Store purchase, Apple will send you a new cable by the end of February 2016.
All other eligible MacBook owners should contact Apple Support or visit a nearby Apple service provider.
Affected cables have “Designed by Apple in California. Assembled in China.” stamped on them. New, redesigned cables include a serial number after that text.