A new rumor Thursday maintains that Apple is not only building a Retina Display-grade iPad but that it will be an entirely new sister model. The new version would have the long rumored 2048x1536 screen and get an "iPad HD" name. Rather than work as a direct sequel, though, the device described to This is my next would be a pro complement and would even get pro creative apps, which could include equivalents to Aperture or Final Cut Pro.