I give the .357 Redhawk 3 years until it's discontinued.
Maybe. During that 3 years, it is pretty easy for Ruger to play around with some other barrel lengths. This is a pretty easy game for ruger to play. I dont see any development cost or new machinery. Just a variation on the theme.
If I had a dollar for every variation of ruger revolver and pistol they ever sold and I did not purchase, I could probably buy a new Ford F350 Or, I am getting closer all the time.