This is the response I got from Hercules. I sent them an email this morning and just got a response from them. They seem to be really good company since they were able to respond to my email so quickly.
<< Dear customer,
The 3D Prophet III is NOT discontinued, this rumor that is floating
around is completely false. And we will always continue support for products
as long as we can, for example, we still make drivers for our Phoenix 2 card
which is almost 3 years old.
Regards [[Please reply with FULL correspondence]],
Jean-Marc Caron
Guillemot/Hercules Tech Support North America
Video Division Specialist
>>
I would go ahead and get the card.