tThey say that
If the GX-10 was 95 percent Pentax, the GX-20 is probably more like 80 percent borrowed tech.
However... I have the GX-10. It body differs from that of K10 a little. So are the buttons. And it has different-styled menus. Also, on extremely long menu from K10 is split in 2 shorter in GX-10. Same things this article says aout Gx-20 and K20 difference...
GX-20 is exactly in the same body as GX-10... So um... why having all the same differences from Pentaxes as GX-10, GX-20 thought to be furhter away, fomr KxxD?