Apple put their support behind the Blu-ray format in March 2005 when they joined the Blu-ray Disc Association's (BDA) Board of Directors. In October Apple was rumored to adopt both formats with Blu-ray drives supposed to land in the Mac Pro as early as February 2007, but that never came to pass.
Apple is taking the exact right strategy on this one. They're waiting for the dust to settle and for one clear leader to emerge. When (and if) that happens, Apple will adopt that technology for the Mac.
I can't agree more with Apple. I've been advocating a total boycott of both Blu-ray and HD DVD for a while now because I don't think that the consumer should be held hostage while two children throw a temper tantrum. Don't buy movies or players (including the PS3 and the Xbox external) in either format unless you want to get stuck with a 21st century Betamax.