Professor Layton and the Last Specter is due out on October 17th in the U.S., and we have a lot of English screenshots of the game. Last Specter is the first in a new Layton trilogy, and shows how Layton and Luke first met. The professor also has a partner named Emmy.
Last Specter begins with Layton receiving a letter from an old school friend, telling him of a mysterious giant that is destroying his town, Misthallery. Layton and Emmy set off to investigate together.
Like previous Layton games, Last Specter will have downloadable puzzles every week after release.