There will always be new models. For diving though, it could be a downgrade. A couple of years ago, the trend was to super zoom cameras with automatic everything. They don't work very well underwater, where wide angle and limited zoom combine with manual control and RAW output to give the best results. The main features expected in newer versions will more than likely tend toward HD video stuff. Why wait?
My son attended a Canon seminar at his employer, Best Buy, and tells me that future cameras will do everything at once and entirely eliminate the need to be a skilled photographer. Of course, when cameras came out they said that painters would no longer be needed. A hundred fifty years later, they still seem to be painting portraits and still life.
