Disney Dreams! will be showing every evening in Disneyland Park until the end of September 2015. If you are visiting Disneyland Paris from October 1st onwards, the Disneyland Paris website recommends you get in touch with them.
This news was expected, as rumours to limit the amount of showings of Disney Dreams! over the last few years is yet to happen. I would expect Disney Dreams! to continue daily well past September 2015. Unless Disneyland Paris have an even better evening show in the works.