I really hate making these posts more than anything, especially after I was so confident in giving a release date in my last post, but I need a few more days to get this next preview update ready.
Everything was going very well, but then over the past couple of days I've hit a bit of a wall and struggled to get the end of the new quest content finished. It shouldn't take me much longer to get it done now, so I should have it released some time around the middle of next week. If it's going to take me any longer than that (it really shouldn't...) I'll make another post to let you know.
Sorry for the disappointment, and I'll get this update to you as soon as I possibly can!