Hagay,
We are working to update our IVI architecture to be compliant with the latest IVI Foundation specifications, including support for the Power Meter, Spectrum Analyzer, and RF Signal Generator classes. Furthermore, support will be available for both MeasurementStudio, LabWindows/CVI, and LabVIEW.
While National Instruments will have a select few instrument specific drivers available for the new classes, you should be able to obtain drivers from instrument vendors.
Bankim Tejani
Instrument Driver Group
National Instruments