Board Thread:Plants vs. Zombies Heroes/@comment-27053902-20161214045709/@comment-25089892-20161214203240

Confirmed event schedule (taken fresh from the coding):

12/11/2016 @ 6:00pm (UTC) - 12/20/2016 @ 6:00pm (UTC) = Regifting Zombie event

12/20/2016 @ 6:00pm (UTC) - 12/27/2016 @ 6:00pm (UTC) = Pear Cub event

12/27/2016 @ 6:00pm (UTC) - 01/03/2017 @ 6:00pm (UTC) = Overstuffed Zombie event

01/03/2017 @ 6:00pm (UTC) - 01/10/2017 @ 6:00pm (UTC) = Toadstool event

01/10/2017 @ 6:00pm (UTC) - 01/17/2017 @ 6:00pm (UTC) = Gargologist event

01/17/2017 @ 6:00pm (UTC) - 01/24/2017 @ 6:00pm (UTC) = Energy Drink Zombie event

Which most likely means that the next small patch/update is going to release for PvZH on January 25th.