No, none of the 4 slides that are currently being installed are mat racers. It was already noted that at least 2 are a newer slide by ProSlide that feature turns with a wider radius open tube that changes the dynamic of the flow through the turn. The other two look to be like the more typical ProSlide single tube slides. The mat racer slide pieces are still in the staging area by Wet n Wild, as seen in the update video.
EDIT: Unless you're talking about the Volcano? But still, there's only one tube section in, and that won't be for a mat racer. Not sure where you're seeing mat racer slide pieces going up.