Can you tell me what will be the difference between the complete version of illusion for MAC, and the Emitters for Motion?
And how often will the Motion emitters be updated, or do i have to buy a new set every time?
Will the emitter library of version 3 for Windows also work on the MAC version?
The Motion Emitters are a one-time collection (for now) -- they will not be updated every month. Since it's using Motion's built-in particle engine -- which isn't as sophisticated as particleIllusion 3 -- it's similar to particleIllusion SE. But SE is much faster than Motion's particle system.
When 3.0 is released for Mac, it will be able to load all of the existing 3.0 libraries.