Last night's xlr8yourmac.com's page quotes a letter from 3dfx regarding the Mac Voodoo 5 AGP card.
"So - with clear intent - we are showing off a dual-chip, AGP, Mac Voodoo5 at E3. There are no technical issues to releasing such a product for the Mac. None at all. "
He goes on to ask readers to try to convince Apple to unbundle the Rage 128 AGP to allow users to BTO a 3dfx card.