Some claim they might go neutral, if only to appease their customers. In that fashion, we might see a combo drive available on their units. That would make a lot of sense, but it seems unlikely that they would lend any support to a competing format. The article cites the Mac Pro workstations as the first candidates for Blu-ray inclusion, even though the primary target for most Blu-ray is for those interested in home theater.
There is no official word from Apple just yet.