Sometimes, information can be gleaned from the most unexpected sources. In the yet-to-be-released iTunes 8.2, Blu-ray was mentioned on the "About iTunes" splash screen.
For those not well-versed in the world of Apple computers, Mac machines currently do not support Blu-ray Discs. Though you can install a third-party optical drive in the Mac Pro, you'll still need to boot into Windows to read Blu-ray media. However, if iTunes is going to allow ripping from these discs, we might finally see Macs and MacBooks with fully integrated Blu-ray support and drives.
Back in October, Apple CEO Steve Jobs famously called Blu-Ray and its licensing process "a bag of hurt," implying that it was too expensive and too complicated at present for Apple to add Blu-Ray drives to Macs. Jobs, however, is notorious for downplaying certain technologies right up until the day Apple releases such a product, such as he did for years with video-playing iPods.
All this is just speculation for now. But if there is going to be any announcement of Blu-ray support it'll probably be at the upcoming Apple WWDC (Worldwide Developers Conference) held in San Francisco from June 8 to 12.