Pretty sure HR34 is just refurbs at this point, the problem is they have lots of them to refurb and redistribute as people have problems often get HR44 then the 34 is back to someone else's home in a few months. Until they are willing to take a write down on that inventory we'll be in this same situation.
Based on the HR21-HR23 past, they usually do that around 5 years, and no longer collect those models for refurb use.
So, 2-3 more years of HR34 floating the system is likely.