From what I read when I was helping someone out with their blu ray drive in a new windows desktop, Windows 7 doesn't have native support for blu ray either, in the sense that it won't play in Windows Media Player.
That being said I doubt there is a blu ray drive that will fit. I don't know of anyone that goes out and puts a new drive into a MacBook Pro. Could have to do with custom slimmed drives in Apple's notebooks.
From what I read when I was helping someone out with their blu ray drive in a new windows desktop, Windows 7 doesn't have native support for blu ray either, in the sense that it won't play in Windows Media Player.