Hello again,
I'm sorry about how long it's taking me to get the preview update out, and for the lack of communication. I've not been 100% over the past couple of weeks, so progress on this update has been a lot slower than I expected. I'll get the preview out as soon as I can, which should be by this next weekend at the latest.
Thank you all for your patience, and I'll see you again soon.
Edit (Friday 4th): I'm having a PSU issue with my computer, so the update will likely be out on Sunday, as I'm expecting the replacement part to arrive tomorrow (Saturday).
Edit (Sunday 6th): I'm still having computer random restart issues, so the release will be another day or two while I continue to try to get this fixed. Sorry! (P.S. All of my current progress in on github, so you can build the preview from there if you'd like!)