I reckon it will be the new Lexus IS250 V6 (204hp) 4GR-FSE engine that will make it's way into the new V6 RAV4. The old 3.0L Toyota/Lexus engine has been replaced with the 3.3L or 3.5L engine in most models in the Toyota/Lexus model line-up's. The old 3.0L engine would not meet the latest emission control standards in various world markets and IMHO I just don't see Toyota offering a RAV4 with either a 3.3L(230hp) or 3.3L (275hp) V6 engine.
ndeed the 3.5 L engine finds its way into the RAV4 then we are looking at a totally different breed of cat. It may be that Toyota is only going to produce the High Lander as a hybrid.it could be that the RAV4 we know will be produced as a small SUV under the Scion nameplate.