It looks like US Hardcore 2 has now been upgraded to DayZ 1.7.0 and is also running the Arma II OA beta patch. (current build 93398).

The beta patch can be found here: http://www.arma2.com/beta-patch.php

If you own the Steam version of Arma II and would like to run the beta version with a Steam overlay + time logged, follow these instructions: http://www.neogaf.com/forum/showpost.php?p=38340497&postcount=6612

Dwarden's Installers also work for the beta patches (I haven't tried these).
http://forums.steampowered.com/forums/showthread.php?t=2705492