It would seem that NVIDIA has cancelled plans for the NVISION conference this year.
The event will be replaced by several smaller events that NVIDIA will announce later on in the year.
TechConnect Magazine says money, or the lack thereof, seems to be the issue. NVIDIA reported a new loss of $147.7 million in Q4 FY2009. Maybe we will be lucky to see the NVISION conference pop back up once the global economy starts generating more revenue, if it ever does.