As of January 2007, 13-digit ISBNs will be in use, and A-R intends to comply with this new standard.
Starting Fall 2005, A-R will use 13-digit ISBNs for new titles submitted to Books in Print, and those codes will be used with the listings for those titles at A-R's website.
During the 2006 "transition" year, we will use both 10- and 13-digit ISBNs, and continue to do so until our customers have made the transition with us to 13-digit codes. We plan to use 13-digit ISBNS in our 2007 Catalog and our newsletter Embellishments, starting January 2007.
For more information on the 13-digit ISBN, the following sites may be of interest: