This is a fantastic 4k release and it is readily apparent that Universal actually puts a lot of care into getting these done properly. Note that the included blu-ray is a remaster as well, and while notably worse than its 4k counterpart, is still better than the original release from 2011.
Only docking a point because the digital code is in fact expired (it redeems through Google Play, and GP will not accept the code that Universal gives you).