There are a couple of announcements for a Patti album entitled "Avant
Gershwin" in the Internet, apparently released by Rendezvous Entertainment.
That's pretty much all I could find out yet.
http://music.aol.com/artist/patti-austin/3589/album/avant-gershwin/868829
http://www.amazon.com/Avant-Gershwin-Dig-Patti-Austin/dp/B000IOM0UQ/ref=sr_1
1_1/104-9288156-9160736?ie=UTF8