How a few words from OPEC ( SA ) could change the sentiment

Indeed, I was expecting a surprise, but not from OPEC. It looks like the market does not buy that much the idea of "Fed rising rates".On the other side, this rally is based primary on expectations,but not fundamental change in driving factors. The fact that the rally is based on expectations makes me thing of an impulse wave. Although I am not e frequent user,it looks like we are onto the last uptrend from 5-3 wave formation. The OPEC will meet "informally'' in the end of September.