Seriously, I'm rereading (well, audiobooking) them again right now. Just getting into the last stretch of Drawing of the Three. And they're wonderful! I'm actually quite excited to revisit the last three, which I've only been through the one time, because I'be heard they play much better the second time through. But my goodness, this is an adaptation that seems impossible. How exactly do you bring Detta Walker to the screen? On the one hand, it's a great three roles for a great actress, but how exactly do you make that stereotype make sense in a two hour movie?
There's tons of that stuff. This first movie, proposed as an adaptation of the first book, involved the hero murdering an entire town, then letting his symbolic son die, and when he catches the villain, they just have a conversation about existential reality. Tough sell for your six film franchise, or however many.
Maybe that's the explanation for the January release. Maybe, if they keep these things small enough, they can do the whole thing profitably. Mid budget, niche audience. Like the Resident Evil series, but considerably more ambitious from a narrative perspective.