According to AppleInsider, Macworld 2008 will bring Blu-Ray to Mac OS X, what exactly it will bring, just data access? or HD Movies? hopefully the latter, in my opinion, but I would much rather see Apple invest time and effort in bringing a Dual format drive as I don't want to see Blu-Ray get used and then vanish off the face of the planet.
Blu-Ray appears better for the consumer as it supports larger capacities, features a hard coating to prevent damage, and Blu-Ray movies support higher peak bitrates, but can everyone remember Betamax? superior to VHS but still disappeared into obscurity.