To take a look at these new features go to 'Labs' tab under Calender settings. 1.Event flair: to have a reminder on events like birth days, meetings, flight timings 2.Gentle reminders: Your calender window tab starts blinking when you got a notification . 3.Automatically decline events. to decline your friends invitation to an event or party when you have a busy shedules, if you turned on this feature invitations were declined automatically when your busy or out of town.