First of all, Donny, if you are interested in the new S-970, get it now, because the next one will be in about 3 years. That's a long time to wait. I've read what S-970 owners have said about it on different forums, and they are all very happy with it. They report noticeable improvements, and are happy to have upgraded. For me, just the inclusion of new choir voices from the Tyros 4/5 would be a good enough reason to get it.
Second, we can't be sure what will happen in 3 years. They may not come out with a new model. Or, it might be totally different, and not well-suited to you. If that will be the case, isn't it better to have the latest, greatest model than the second latest?
Just my thoughts.
_________________________
Mike