The Sony APS sensor does captures 30p/25p progressive that is saved in interlaced container (60i/50i).

As I told you today I don’t care about 24p (it’s a consumer camera!) and for those of you that want to have 30p/25p don’t worry, “the Sony APS sensor captures in progressive, but the camera is saving the footage into an interlaced container with a doubled framerate. Every NLE can deal with it in post without doing anything special. You just have to tell it that the interlaced footage is actually progressive. It’s just saved in the industry-standard format.

It’s 50i (or 25p) for Europe (PAL) and 60i (or 30p) for the US.”

Source: Dpreview forum