This is very good news - Reeder 4 for iOS had been released.
I bought the original Reeder the day it got released back in the days and did the same now for version 4. It’s my favorite RSS reader and will have to dig into the new version a bit more. So far I personally am already happy about the improved keyboard navigation (J/K for the rescue) navigation on the iPad.
Matthew Cassinelli has a great review outlining all the new features.