I wouldn't normally do this, but here's a link to a thread on the Cunning Artificer's site showing the new books and Pratchett related publications for this year.
It seems to be:
7th June - The World of Poo.
21st June - The Long Earth (with Stephen Baxter)
13th September - The Compleat Ankh-Morpork
11th October - A Blink of the Screen: Collected Short Fiction
18th October - The Complete Discworld Companion (with Stephen Briggs)
It seems to be:
7th June - The World of Poo.
21st June - The Long Earth (with Stephen Baxter)
13th September - The Compleat Ankh-Morpork
11th October - A Blink of the Screen: Collected Short Fiction
18th October - The Complete Discworld Companion (with Stephen Briggs)