The accompanying sound library is ~1.5GB... both are linked below.Hartmann Neuron VS (Intel Mac)Neuron VS Database
Note: You still need the <nuke> controller to make the current version completely usable, but... It's a proper good start. It will work without, but apparently any parameter tied to the nuke controller will require it to be present. Given what I've read so far, I fully expect that with a short amount of time that will be overcome.
The Neuron was one of the most amazing synths in recent history, in my opinion. To have it freely available, on modern machines (albeit only Intel Mac) is bloody amazing.