I've started listening to Welcome to Night Vale... It's awesome stuff, especially since I like HPL kinda stories a lot... Thanks to those who mentioned it earlier in this topic, that's one of the reasons I started listening.
Regarding Leviathan, I think they said on their Twitter back in November, that the next half of the season should be out this month, but so far I haven't found anything. Unfortunately. Guess we'll just have to wait and see.