Jay, "Screaming Eagle" is a term but rarely seen on WLDG.
That being said, though, a quick Google suggests that 2003 was the last vintage released, and it appears that releases are often made in the fourth year after the vintage.
Saratoga Wine Exchange in California appears to track the wine, although as you likely know, it sells entirely by mailing list, with bottles turning up later at hugely inflated prices on the secondary market.
Here's a Saratoga link with an E-mail link that you may be able to use to get information. Good luck! If you get to taste any, we're counting on a TN!
http://www.e-winegifts.com/find_buy_win ... _wines.asp