meh, not rebuying it on Blu-ray, I already have it on HDDVD. They're using the same AVC encode from what I hear, but they're adding a PCM audio track. The HDDVD DD+ audio in the Transformers encode already sounds better than any Blu-ray movie I own that contains uncompressed audio, so I don't see a need to pay what will presumably be an outrageous price. But anyway, even if it was a new video encode, it wouldn't much matter. The higher ISO film they used to shoot the movie won't allow for any better picture quality.