They make one now... At least they list that they make one. Ruger is horrible at producing firearms with any regularity. Especially the less desirable ones.

Having said that... if you think Ruger is bad try getting one of the new Keltec guns or a Kimber right now. Kimber is backed up a minimum of 6 months on all of their 1911's and getting a SOLO is, well...... next to impossible.