Am I to assume correctly that I am now to use RSD 2.0 to open all my FF and BS Projects and then save them under the new RSD 2.0 extension ?
This will all depend on your workflow. If you are building projects for customers and want to turn the project over to them, you ought to decide if they will need Foundation Framer, Bootstrap Builder or Responsive Site Designer for future updates.
If you own all three apps and these are just for you, and you want to do everything under one app, RSD would be a good choice.
I just don't want to start doing this if there is a possibility of FF or BS getting the features RSD 2.0 has. Or has that basically happened ?
RSD will always be the grand-daddy of our responsive apps so it would be more like features will be found in this app and not Foundation Framer or Bootstrap Builder.
Is the direction of Coffeecup going (or already there) to support FF and BS under the software program RSD 2.0 ?
Some users may not want to use RSD as they only want to build a website with Foundation or Bootstrap. This gives them a lower cost alternative and still have a powerful web design application.