I just got this announcement today via a post card (yes, actual U.S. Mail):

Beginning this year, we have transitioned our annual educational recording to an all-digital album that is available for free download, as well as on our YouTube channel. We are especially excited to share our inaugural digital album with you, which exclusively features the inimitable music of a true American icon. The never before released performances of the music of John Williams on this double volume set were recorded live during two concerts given at The John F. Kennedy Center for the Performing Arts in Washington, D.C., in 2003 and 2008 with the composer himself on the podium. We hope that you enjoy this first digital release of these incredible and historic concerts, and we look forward to sharing much more music with you in this way in the years to come.

The link they provide is:
https://spark.adobe.com/page/MtAOvmGmJ8YRQ/