Do you reckon the producers already finished animation and voice acting of the full first season?
I ask this because we only have about 12 voice actors officially listed. I do hope there will be loads more characters than this! Do you reckon that Kenny etc will do many other characters too?
Chris here…
My own opinion is that the series is more or less “in the can” - they will certainly have finished the voice recordings a long time ago. However, I think you’ll find several actors will voice several characters (such as guest characters), this strikes me as pretty normal on an animated series! 
Take care…
I don’t know for sure about the animation, but Matthew Mercer confirmed in a recent interview that all the voice acting for the first season is done.
And since this is one of those shows where they match the voice to the animation and not the other way around (i think) most of the animation is probably done too.
We’ve seen clips of all the voice actors that have been confirmed by now, so they probably didn’t list more voice actors yet because of possible spoilers.
Basing it on how CN tends to air shows, sometimes a season start while it’s tail end is still in production in the animation department. So maybe the final touches are being added to the final parts of the first season.
Some videos may be of help, courtesy of Star Wars Weekends. The second focuses on Dee Bradley Barker, aka Slithe in the new series.
Obi-Wan & Beyond - Voice actor James Arnold Taylor talks about voice acting and finishes with his family tree of voices. Quite entertaining:
http://www.youtube.com/watch?v=8WhxOWLyo9U
Behind the Force - Voice actors Ashley Eckstein and Dee Bradley Barker discuss the process of doing their job and how it relates to the animators. Dee showcases some of the wild voices and sounds he can produce.
http://www.youtube.com/watch?v=dzgpus5cpcI