It's been quite some time and looks like Episode 2 is coming to a close (and chapter 3 begins)
It's understandable why it's taken quite some time though
1. Gabe is doing the game by himself
2. Gabe has to wait for the various artist that are paid to commission the art for scenes (which most tend to take their time doing, some taking months or years)
3. Lest we forget that with each game that Gabe has made, the time length to completion increases
4. As much as Gabe wants to speed along the game and finish up scenes, there has to be wait on others for art or it'll just be text with no scenes.