Ah, some Frost lovers. Nice.
For the delay in episode 4, i'm registered on Noken's forum (the guy who made Frost), and he's just too busy now, but episode 4 is still on scheduled.
To see what Noken was working on till now, watch the trailers of Bad Company 2, there's a medic called "Nok" in the first video. And then he made the second trailer (the "stop motion" one)