That's a tough question. There is no updates happening for HR24 or HR34 unless there is an update to maintain the service, such as if they change a satellite config or something. They are not adding new features to these receivers. HR44/HR54 are still being updated occasionally, but not as frequently as in the past. At this point, I don't expect you'll see any meaningful change if your software updates with the exception of the HR54. The client may update but they operate off the server, so client software doesn't really control much beyond as far as the user interface.
I'm a little surprised your HR34 has software from 2014. If the service is active on that receiver it would pull any update they push out and 8 years is a very long time. I have an HR24 that updated to 0xd49 in May, and they aren't actively working on those receivers at this point.