There are 3 books in The Rise of the Warlords series.
The Rise of the Warlords series does not have a new book coming out soon. The latest book, Into the Spiders' Lair (Book 3), was published in January 2018.
The first book in The Rise of the Warlords series, Zombies Attack!, was published in September 2017.
The Rise of the Warlords series primarily falls into the Action Adventure genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.