This action should be expected, IMO, doesn't Zerocash (FINALLY) launch tomorrow? Or at least they are finally revealing how they are proceeding if I remember correctly.
I haven't looked too closely at what they are doing, but (maybe someone who has can post a reply) it seems a bit clunkier of a process than (what I think) is a bit more fluid and elegant solution in DRK.
But there does seem to be a true "competitor" looming and i'm really curious as to what they release. I don't think they've said anything about algo, distribution or even mining at this point.