of reviews of the actual disc. I hate when people do that. I already know what to expect from the movie. I want to know if the blu-ray is worth buying. Does it have a good transfer? How is the sound? The extras? Unless reviewers are commenting on that they should not be submitting reviews for something that they don't have yet.
That's Amazon though. They need a separate distinction (or separate review altogether) for the disk(s) themselves. They don't allow for that. So unless somebody specifically includes their opinion of the disk(s) in their review, you don't get that.