Exciting to see Coffee Cup new development Foundation framer (responsive shopping cart would have been even more exciting, but hey ho)
I'm happy with our website developed with RSD currently desktop down
Can you advise the advantages of developing new site with FF?

The primary advantage is that you have a CSS and JavaScript library built directly into the application. This allows you to do things like making collapsible navigation, responsive slideshows, etc. natively without having to finagle things with loading external libraries. The support for data attributes is another thing RSD is lacking, which means less need to go in and edit code after building. But it's components and symbols which really has me excited.

Looking forward to finding out what Foundation Framer can bring to our website.
I'm not looking forward as much to all the work involved in completely re-writing our site!
I'm wondering is it going to be feasible to create a couple of FF pages & link to them from RSD as a way of gradually moving to new website entirely built with FF?