I checked Ruger's website last night and found nothing concerning a 10/17 based on the 10/22 model.
I VERY VAUGELY remember hearing somewhere that the reason Ruger had not made a 10/17 was due to the receiver for the 10/22 was not designed for the increased chamber pressure of the 17 HMR. True or False?
However, it appears that everyone and their mother on Rimfire Central is converting 10/22's to 10/17's with some minor problems that had mostly to do with feeding and ejection of cartridges.
By the way, Ruger's new website is sorry to say the least. I had to go 3-4 screens deep before I ever saw a firearm.