[plt-scheme] Scenes in 2htdp/image

What happened to scenes in 2htdp/image?  empty-scene and scene? have
been removed from 2htdp/image.  Has the concept of scene been
deprecated in favor of image?  In htdp/image, (scene? (rectangle 100
100 "outline" "black")) => false, but, in 2htdp/image, (rectangle 100
100 "outline" "black") seems to be the equivalent of (empty-scene 100
100) from htdp/image.  Can someone clarify?

Justin