OP:
You'll need a 3rd-party (non-Apple) CD/DVD/Bluray drive.
You'll also need 3rd-party software to play the Bluray discs.
I have a Samsung BluRay drive. Not sure if they're still made, and I haven't really used it yet for Bluray, but it's been a fine drive for almost 5 years of use.
You might look at Pioneer and LG drives.
If you get one, I'd suggest you get one that also has M-DISC burning capabilities, as well.