David and his editor were going through it. I can't recall how far back that was but I think it is a fairly lengthy novel and they were working on it. I honestly don't have any info on where it is currently at but in one of the interviews Dan posted at one point he talked about it and what it was generally about. 

Hopefully, an update comes sometime in the near future.  

I'm told David is working with Project Blue Dot and is on Twitter. I was tossed off of Twitter while Trump was still president and so do not visit that site. I only used Twitter to pose questions to Trump, Ted Cruz, Rand Paul, and a bunch of other Republican liars. Mostly my questions would disappear, and I would get a bunch of nasty and bizarre comments from supporters of these people. Then one day I just got a message saying "This account has been suspended." and that, as they say, was that. 

I was fine with it, as I really don't like the social media thing and Twitter just was not how I prefer to communicate with everything being just a few sentences and me being more long form in my thoughts and responses.