When you finish the daily sudoku you'll see your streak, your milestones and your streaks with friends, and you can remind them to play. You can now start the daily sudoku on one phone and finish it on another. The number pad no longer skips digits when you type fast. And with a large text size, the Main menu button no longer goes off-screen.
Only the current version so far — new entries appear as the game ships updates.
A new sudoku every day, the same one for everyone. Can you keep the streak?