I know that feeling. The Vulture III is still hiding in the mists of time as well, and no amount of Vulture IV's can fill that hole in my heart!
It does seem like we are 'in the zone' for the 2Q releases potentially hitting the wild though. I keep checking at some of the online vendors I use to see if the new Davion Omni's or the Juliano are in, but nothing has appeared yet. Does IWM actually announce when they start shipping the line releases to resellers, or only when they get added to IWM's web store?