The cumulus pack V3 takes advantage of the new TG2.2 features, including lighting and the raytrace renderer.
But the biggest thing is in the cloud itself. As you can see in the demo picture, it has softer features at the bottom and as you go higher, more of the cauliflower shapes materialize, just as it should be in the real thing. This was only possible since TG2.2, hence I had to wait so long with making this available. Overall, these clouds look much more natural than the cumulus V2 ones, although the V2 still have their unique use cases.
Cheers,
Frank