The X4 should be released in Spring 2013. It is a contender to be one of our favorite small cams just as the
Black Diamond Camalot C4 is our favorite medium and large cam. Why? It looks like it might have the best range of any small cam, a very narrow head to get in pin scars and shallow pods, and a flexible stem. While we like the
Black Diamond Camalot C3, we don't love it. The X4 appears to address the short comings of the C3 which were: only 3 cams (more likely to walk and less holding power) and a less flexible stem.
Will it be better than the Alien and
Metolius Master Cams for aid climbing, shallow placements and pin scars? We won't know until we get our hands on them.