While the sixth Professor Layton makes its jump to Nintendo 3DS, the third DS title is making its way overseas finally. Professor Layton and the Unwound Future has been confirmed for both North American and European release. North America can expect the title September 20th, and Europe some time in October.
This title concludes the original Professor Layton trilogy. Two more titles are still left on the Nintendo DS for localization. Even after the 3DS launch, like the Gameboy Advanced, Nintendo DS will probably still have a lengthy life-span. So hopefully those titles will make it in time.