I was going to pick one of these up after coming back from a break and seeing the center diff option as a feature. But no center diff available means no sale. I'm just glad I found out before telling the shop to order it for me.
My only complaint is that a published and advertised option that makes folks consider the platform isn't available. If they hadn't made it a bulleted feature, but said it was coming soon in follow up text, it wouldn't have been an issue.