The speculation about a future Rav4 hybrid is interesting. Ford's new Escape just dropped the hybrid version, and Ford seems adamant that there will not be another Escape Hybrid. Backing that up are numbers showing the hybrid version was only a few percent of sales. Like 3% in 2009.
It's not speculation. Toyota Motor made the announcement some 6 months ago. The Venza and the Rav are the next up. It just remains to be seen what kind of power setup the Rav will receive. If it is the 2.5 Hybrid version it will be silly fast.