Kinda of a silly question... I just got another DVX100 but the new DVX100(A)...

On the side of my box says (AP)? Why not (A)? Does the (AP) mean NTSC?
Is the (AE) PAL? What does the regular (A) mean?

DVX100(A) ?
DVx100(AP) ?
DVX100(AE) ?

I believe the "AP" is merely the 100A "Panasonic" which is their designation for the U.S. products. That's what my box says.

Correct. P = USA, E = Europe.