When SCI Studio VGA comes out, it will be at the same place SCI Studio 2.1 is available. There's no release date set.
All vector formats are different and none are interchangeable. For example, AGI pictures also are vectored, but are quite different. You can import bitmaps to trace them, but they will not actually be part of the picture. The VGA one will allow importing of a visual screen as part of the picture.