Hmm, My thought would be if your buying a $1500+ computer, you are going to do some research on it first. Regardless of what you know if anything about computers, you would probably find out somehow that a "New Model" will be out in just a couple months. Regardless if these people know what a i7, ram or even a pixel is, if they know that a new version that is better is coming out shortly, who is going to buy?
I just dont think it would be smart at all announcing something in this industry that you are planning on introducing in 6 months when you have a lot of leftover inventory.