Good catch. I'll update the post. To clarify, what I meant by three-tier: 11.9" Retina Air - slightly thicker than the current Air 13.3" Retina Pro 15.4" Re

Good catch. I'll update the post. To clarify, what I meant by three-tier: 11.9" Retina Air - slightly thicker than the current Air 13.3" Retina Pro 15.4" Retina Pro And the older Air would stick around for a while. I really doubt Apple would throw away the Air branding or thinner design.