Episode Four has a release date! It's June 7th, in case you didn't read the title closely.
What's that? You missed the third episode, and thus feel inadequately prepared for the upcoming release? Well, apparently Episode 4 is so awesome that free copies
of Episode 3 are being given away (Steam version). That gives you just under three weeks to be all caught up for Episode 4.
And don't worry: Episodes 3 and 4 do not require you to play episode 1 and 2. The story for Episode 3 was written as a perfect entry point for the uninitiated. Of course, you can still buy the Episodes 1 & 2 on Steam to slake your curiosity.
Let the countdown begin!