No, fewer digital changes than the blu-ray. You are probably thinking of the HD version of the Lowry DVD master, which had a CG re-do of the car going off the cliff. The wowow is a newer 4K remaster done for the 2011 30th anniversary and has much more accurate color than the blu-ray.
I thought it had some recomped elements and also erased the guiding rod for the boulder?