The GURPS PDF challenge successfully unlocked all of the books.
I've seen a number of them - the authors did some exchanges so we can read each other's. There aren't any that I'm not looking forward to seeing in final production version.
But there are a couple I'm really looking forward to.
All of the DF books can be useful to me.
Ring Fort? Thanks Doug, I probably will need to drop a ring fort down somewhere and now I'll have one.
Two-page dungeons? I like them and I'd run them. I told Matt so when I first saw the book. I don't know when I'll need them but they might be useful drop-ins for Felltower.
Gates? I wrote it.
Twists? I didn't see this one - Sean usually doesn't post stuff up for peer review when it's a short production item and doesn't need spot-checking. Sean is covering some ground here that I'm interested in seeing covered but wasn't interested in writing myself - land, titles, and high-tech. I'm really looking forward to that.
The Action adventure by Shawn Fisher is good. I read it and I liked it. It's fun stuff and has exploooooooooooooooosions! If you play it right, it will, so do that.
And Matt and I can't do Renaissance Orcish Underwater Ninjas without his work on Venice, so I should probably read that whole book ASAP.
Everything else I looked at is, at the very least, interesting and worth the time to read.
Overall, I'm excited to get the books. DF23 will be my first read, after DF22 gets a glance to see if anything changed from just-pre-release to release.