Cyclopeatron in this post pointed me to this announcement.
Dear Wizards of the Coast:
Dungeons and Dragons is a niche product, that has had it's heyday. It has enough exposure that people who are interested in it have checked it out. The people that want to play it are playing it. You will never make money off of it, the way you can make money off of Magic: The Gathering.
I have a huge stack of materials that even if nothing were ever published again, I could keep playing forever. You look silly in your new hat,