You can now focus on whichever task or event you have open. Once you open a task or event, you can focus on it by using the keyboard shortcut:
Cmd
+
Shift
+
F
(Mac)
Ctrl
+
Shift
+
F
(Windows)
This way, you can have more flexibility about what needs your attention.
If you don't have a particular task or event open, focus mode behaves like it did before, showing you either the calendar event that's ongoing, or the first incomplete task in your list.
focus-mode-2-2x
There are also a number of smaller quality of life improvements, such as starting a timer now starts focus mode as well.