yes, if you have SCAL2, then the upgrade to SCAL3 is free. You can have both SCAL2 and SCAL3 installed on your computer.
Silhouette Studio (SS) is the free software for the Cameo. That software utilizes .studio files. You can also save your .svg files as .dxf files and SS will open dxf files.
OR you can upgrade to SS Designer Edition and automatically open .svg files. the retail price of SSDE is about $50, but if you wait, you can often find discounts.
I bought mine for $25, and I thought that was a nice addition to compliement the SCAL3.
I personally like the Print and Cut better with SSDE than with SCAL3.
SO, now that you know you are getting the Cameo, go to the Silhouette Online store and start collecting the free studio file they offer each Tuesday.
One thing to know, it is not easy to save .studio files as .svg files. You would need to screen capture the image and then trace, just like any other image on line.