Hi Marco, I haven't had a chance to work on instancing for v4 yet, but it is high on the list of what I'd like to get done.

Probably the first v4 beta won't have any new features in it other than being 64-bit and a Mac native build, then once it looks like that big transition is stabilized I'll work on some new features on top of that. Dimensioning, instancing, and grouping are all high on the list of what I'd like to do but I cannot 100% promise exactly what will get in for v4 as of yet.

- Michael