SketchUp Studio - Can I upgrade?

Last May I took advantage of the special offer to get a two year subscription of SketchUp Pro for $299. I also use V-Ray with it. The new SketchUp Studio looks like a really good deal for me, since I need to keep current with V-Ray anyway. I think I’m locked into SketchUp Pro for two more years though. Is there any way to upgrade to SketchUp Studio from SketchUp Pro without abandoning the two years that I already paid for? Or do I need to keep buying everything separately until the subscriptions lapse?