Actually we dont kniw what will happen in bitcoin august 1 if bitcoin price increase or decrease but for sure after the date of august 1 the price will increase because many people buy again bitcoin so the price will continue to increase again.
Nothing is certain but as you say bitcoin will probably increase, I see segwit as something that will give confidence and move us beyond all the drama we have seen in the short term.
In any case the long term prospects of bitcoin have improved quite a bit.