I predict the DMR will show up some time in 2016, maybe 2015 if we're lucky. Bushmaster has been promising caliber conversions since 2011 and still nothing. They are still catching up from the AR frenzy in the US and the regular model is selling well so the DMR is lower on the priority list for them.
If you want a non restricted ACR then the best way to get one is to buy a used restricted rifle for $2000-$2200 then buy the Dlask non restricted barrel, have Ian at Herron build you a barrel, or have one built (I know a guy)
I have a non restricted 223, 300BLK, and 6.8SPC barrel for mine.