The catalog that came with my old Selle Italia does list two models:
Diva Flow (with a cutout) and the Diva (no cutout).
Edit: That catalog is probably 3 years old. The no-cut-out version appears to have been discontinued. However, you might be able to find new old stock, or people selling their old saddles.
Here's an E-bay listing: http://www.ebay.com/itm/SELLE-ITALIA...#ht_902wt_1037
And here's one for a white one (seconds, unfortunately, but who's going to be able to tell if your butt's on it?): http://www.ebay.com/itm/Selle-Italia...#ht_855wt_1037