I think what JCL meant was that he doesnt understand the context of the question. Batching of what?

Batching is simply the method of preparing a "batch" of vertices and sending them into the pipepline at one time. In that respect, I supposed there is a lot of batching going on in the engine already.

An efficient means of batching large number of similar models is to use instancing, which Sphere does use for grass rendering. Also, sprites are easily batched in a similar way.

As far as that goes, I'm sure the next versions of Gamestudio(A7 etc..) will incorporate some kind of hardware instancing.