Even if it was so, the current version is still stuck at 1080p plus it isn't really all that detailed to begin with:
720p has approx. half the resolution of 1080p, yet when scaled down to 720p and then upscaled back up to 1080p, the BD master definitely doesn't lose half the detail, so that effectively means that the 1080p master doesn't really use all the resolution 1080p has to offer.