"You might think it's exciting news: a new Discworld app is coming," announced Pratchett in a 17-second teaser video posted on the app's official website. "It's secret, so keep it under your hat!"
A release date for the app hasn't been announced beyond the "Coming Soon" message at the end of the video. The publisher is Transworld Publishers, a subsidiary of Random House.
If you're a Terry Pratchett fan, as I am, you'll be thrilled with this.
In writing terms, think about books as apps. What does this mean for writers?