Quoted from Rarehero:I know 1.9 was announced as "final", but I'm hoping that means all the main gameplay is now in place & adding little flourishes on top of that like extra callouts is something that's still a possibility.
They also said 2.0 on WOZ was "final", and they are over version 6 now. On the JJP forums, Ted Estes already commented saying a small update is coming soon. I am sure they will keep working on this game for a while.