The Unearthed Arcana playtest did the job we asked it to do. Occasionally, we put some very experimental things in front of D&D fans and ask them if they want to see more of it.
Two D&D leaks at once, maybe three if you count the accessories. Oh, maybe four if you count the photos from the movie. Then there's the official Dark Tower RPG news!
There is may well enough time for the playtest to complete, for results to come in, the book finished and sent to the printers. If, indeed, that's the plan.
D&D's publisher has confirmed that Witchlight is coming, and we'll find out more about it at D&D Live. However, they didn't mention Wild Beyond The Witchlight: A Feywild Adventure Accessory Kit which has a holding page on Amazon.
Once again, D&D's release schedule has been exposed by Amazon retail listings.