The official website and Twitter account for Is It Wrong to Try to Pick Up Girls in a Dungeon? (Danmachi) announced Season 3 broadcast and distribution will be delayed to October 2020. The upcoming sequel for the TV anime series was originally set for July 2020.
J.C. Staff is returning as the animation production for the series.
Crunchyroll describes the series as:
Based off of a light novel of the same name written by Fujino Omori and illustrated by Suzuhito Yasuda, Is It Wrong to Try and Pick Up Girls in a Dungeon? is set in the world of Orario, where adventurers band together and look for treasures in an underground labyrinth known as Dungeon. However, for Bell Cranel, fame and riches are secondary to what he wants to find the most: girls. He soon finds out though, that anything can happen in Dungeon, and winds up being the damsel in distress instead!
Source: Danmachi official website