I am confused - what is the difference between Octane 4 and Octane 2018 ?

For us using the Houdini plugin, which version am I supposed to use?

Thanks

Hey Casmic,
I was just wondering if you managed to get particles to render with color without using an instance sop ? If I want to use the "render particles as spheres" option I can't seem to get the Cd attrib to load. How are you doing it?

Thanks
Mats