The way I see it, the FT-AC is an indication of the "Adventure" level of the next RAV-4. Adventure already exists in the current RAV4 lineup, but Toyota is telling us the next one will be more beefed up and trail ready. There will still be "normal", lower level RAV4's with the same body, but without the added rugged features.
This can't possibly be the $20,000 vehicle. That is reserved for a new subcompact CUV, probably TJ Cruiser. This is a popular niche Toyota cannot continue to ignore. That is why I am excited by this article because that is exactly what I want !
I would be very surprised if the FT-4X goes anywhere beyond a design experiment and test bed for new features. I consider it a wild card for production....possible, but I don't think so. I do like it's dimensions.