IMPORTANT NOTE:Act 4 is slated to start TOMORROW, November 10th. Act 3 (or Acts 1 and 2 for that matter) isn’t going anywhere, so if you didn’t finish it you’ll still have time to. Look for Act 4 to start around 10am ET (1500 UTC) tomorrow (Tuesday).
You’ll need Lisa, Bart and Homer free for the first round of tasks (and those earning event currency). Also, 1 new premium character combo will be released. 125 donuts for the combo.