David Velasco has written a great gamebook called Heroes of Urowen. Take a look!
Adventure Cow is spreading the word about Destiny Quest Infinite, the app version of the wonderful gamebook series Destiny Quest. They will at the Playcraft Expo if you want to see them. They also have a new game called Strayed. They also have a brand new game for children aged 8-10. If you would like to try it out, you can email them at firstname.lastname@example.org.
Cubus games will be releasing the Frankenstein Wars imminently!!!!
Marc Wilson's Dangerous Worlds gamebooks are awesome. Check them out.
Try out the Castle of Blackwood Moors by David Konkol
If you want to write a great gamebook, the Gamebook Authoring Tool is a great help and it just has a new edition.
Maelorum is an awesome gamebook series and there is a new one in the works.