9 Months Ago, Geek.com says (in Professor Layton to get lots more games (in Japan)) by Blake Ellison posted on March 11, 2009 5:04 pm Level 5’s Professor Layton series for the Nintendo DS is big in Japan. So big, in fact, that it was announced this week that Layton will pick up three more games–which are planned as a trilogy–to ...
More Professor Layton for Japan PALGN

And PALGN says (in More Professor Layton for Japan) The latest issue of Famitsu has reported that Level-5 is working on a new Professor Layton Nintendo DS title that will be released in Japan later this year. Dubbed Professor Layton and the Devil's Flute, the game will be set before the other games and ...
Professor Layton Returns IGN

And 1UP.com says (in Professor Layton and the New DS Trilogy) The game is set three years before Professor Layton and the Curious Village, before our top-hatted hero met his erstwhile sidekick Luke. The Professor has dropped by a mysterious fog-enshrouded town that's home to a legend of a great giant who menaces ...