ISBNs are Getting LONGER. Get The Facts, and the FAQ

For librarians and booksellers alike, ISBNs are a critical identifier of which titles they have on the shelf, and which ones they'd like to acquire. R.R. Bowker is increasing the ISBN number to 13 digits, so it's time to get the low-down on these big numbers coming down the pike.

Here's information from Bookweb, and here's a seven page FAQ in pdf format.