Only Dave can answer that.
Seems everywhere I go people are waiting. Here, for the COTA release. Over at Paradox, for Victoria 1.4 and CK 1.5. Over at MMG, for TC2M.
Personally, I have a small set of about 10 games installed on my computer. The oldest having been released 1994 and the newest having been released 2003. Except for perhaps one, they are all completely mature and unlikely to see much further change.
Besides the age of my system (2002), I am not really very interested in anything new. The learning curve is typically huge and I already have a set with good entertainment value and almost unlimited replay value. When I used to fly flight sims, I used to get a new top of the line system every two years. Now, I am in no hurry. The real problem is finding the time for them.
The only new game that I am waiting for (my first ever preorder) is TC2M from MMG. I am hoping that it will be a worthwhile addition to my small collection of classics.
I think those who had purchased HTTR and had enjoyed it or had missed purchasing it but are now looking for a well crafted intellectual war game that defines the state of the art will be pretty pleased with COTA. Sooner or later Dave will get it done. Then, it will consume your lives the way it has his for the last couple of years.

2021 - Resigned in writing as a 20+ year Matrix Beta and never looked back ...