nVidia HAS decided to continue using the Voodoo name in future products. However, they plan to eventually fade the name off when the beneficial factors of the VSA-100 chip is intregrated into the next NV chips.
"email_atif asks: Does nVidia plan on using the Voodoo name in a future product, taking advantage of the fan base associated with it?
NVIDIA: NVIDIA has not decided what to do with the brand names we acquired from 3dfx."
feb 12 - http://www.sharkyextreme.com/hardware/interviews/ask_nvidia/4.shtml#2