The Silhouette Studio Designer Edition is the version of the Silhouette software made especially for designers. The Designer Edition in... Full Description & Details.
I haven't had my Cameo too long. I haven't used many of the things this extra does but I have done a few & noticed some & I am glad I got it.
The upgrade is really nice if you use a lot of SVG files. It's great to be able to design your own rhinestone designs too.