From what i hear, the Aggies are set to hire Will Martin as their new cornerbacks coach.
NMSU will make the announcement in the next day or so.
Martin is currently the defensive coordinator/recruiting coordinator at College of the Desert. Here's a link to the coaches profiles from the school. You have to scroll down to find Martin.
The Aggies interviewed five for the position but will end up going with Martin. Although this is his first real crack at a D-I coaching job, I understand he is hungry for the opportunity and ready to roll.
On the offensive side of the ball, the team settled on moving R. Todd Littlejohn to wide receivers coach. It was originally thought that he would coach running backs, although that plan has shifted.
As far as the next running backs coach is concerned, it will not be announced until the team gets the nod from the higher ups at NMSU to fill the position. Have no fear — that time will almost certainly come. But, until then, it will be a wait-and-see type deal. I do understand that the Aggies have it down to a couple candidates to fill the post.