With this latest accessory for the MX-1 (made by 3rd party), the DC will become GR alike featuring an automated lens cover and lens shade two in one:-
http://dc.watch.impress.co.jp/docs/news/20130517_599805.html
(in Japanese)
The price of this add-on accessory is at 2,480 Japanese Yens (about US$25 as at today).
Nevertheless, it is almost ascertained that the MX-1 is an OEM product that made in Indonesia anyway. So, it is not a product with true Pentax nor Ricoh gene as neither has any production facility nor any factory over there. In fact, the MX-1 shares the same lens and optical design as the old Olympus XZ-1.