If you don't work with RAW files then there's probably no reason to get it. I think what Adobe is getting at is, with better editing software RAW files might become more appealing to professionals or folks seeking the best possible image quality.
I don't use RAW myself, mainly because it's clunky and, IIRC Photoshop has very limited editing capability for RAW (enter LightRoom). I have not downloaded it, but they are offering the beta versions for free.