Some in this thread have given arguments to explain why Apple pulled the option out. In the past offering a Matte option and a Glossy option was possible since both screens looked pretty much as good as each other. The only difference was one regarding personal choice, what do you prefer. However, so far as I can see, with these new Retina screens there is simply no way to make them in Matte and keep them as good as the Glossy ones sold now. As soon as you throw on some form of Anti-Glare sheet you will mess with the sharpness of the screen and it'll look terrible compared to the uncoated ones. I won't rehash why, reread the comments of others in the thread. So in short this isn't Apple dumping pro's, it's Apple dumping tech that could no longer keep up.
So the simple answer, why no multiple options? Well, so far as I can see is because Apple is setting a new standard for it's screens, and Matte can't meet it. Disagree? Them please offer us some arguments and less whining.
TY
Ok, so that might explain the retina screens, what about the Cinema Display? Or the MBA? Or the iMac? Or the cMBP?
As to some of the previous comments I don't see any actual definitive reason. What I did see is someone telling people who are wanting screen options to go away. Not helpful, some of us have invested a lot of money on the Apple platform in the software we use to work. Of course leaving is fine if you're playing Angry Birds.