iPhone HD scaling on iPad

One thing I've not seen posted: Assuming the next iPhone is HD/higher resolution, and does double the current resolution in both directions (so 640x960) those iPhone apps should look much better on an iPad too.

Right now, when the iPad stretches a 320x480 iPhone app up to that double-size they look pixelated and blocky. But for those "HD" iPhone apps, stretching should display at their normal resolution--so they would look larger, but perfect, on the iPad.

(iPad apps have adopted the HD naming convention--not sure what we'll all call iPhone apps that are optimized for the next iPhone's screen.)

Update...well, they COULD have done it. But they haven't. Makes sense, forces us to really optimize for the iPad...