Panoramic Ultimate Sudoku has been updated to version 1.1.0
Along with a number of minor tweaks and improvements it now contains "Genius" level puzzles for regular Sudoku, a new game mode called KenKen, and support for five new languages: Dutch, French, German, Spanish, & Portuguese.
It supports all Windows Mobile touch screen devices (5.0 and up including 6.5.3).
Take a look here:
And while you're there enter the contest to win a free copy.