Professor Layton and the last time travel has now been renamed Professor Layton and the Unwound Future.
Professor Layton 3, Professor Layton and the Unwound Future, has a confirmed release date of 20 September 2010 for North America. Expect a similar release date for Europe
The latest UK date for the release of Professor Layton 3 is the 22nd of October 2010, The Title for the UK version is "Professor Layton and the Lost Future"