asked Ruger this very question and was told none had yet been scheduled for manufacture but to contact my dealer and have him contact his distributors.  If I recall correctly, Ruger has moved to Lean manufacturing.  Keeps idle inventory to a bare minimum as it depends on actual product orders to initiate production.  hard to believe there isn't enough for a run requested yet though.  My guess, they're concentrating on the bread & butter models now and the new, high-demand models.  I'll get one of these .460 #1's in time.