Having said that, I have to claim, I get impatient. For technical actions I use beta 0.9 as it's way handier. As a default player I use 0.83, because of all plugins I cannot live without. Ok, there's columns ui often available after a short lag, but anyway: It sucks.
Keep in mind even after the release of an sdk for 0.9, if the plugin devs will also take that long, it'll take years to have back a full featured fb2k 0.9 similar to the 0.83.
Now, flame on!
