It was revealed this Thursday (04) that the 3rd season of the anime of the novel Oregairu (Yahari ore no Seishun Love Comedy wa Machigatteiru) will premiere on TV in 2020 with animation by the animation studio Feel (My Teen Romantic Comedy SNAFU TOO!, This Art Club Has a Problem!, Dagashi Kashi).
Crunchyroll describes the anime as follows:
Hachiman Hikigaya is an antisocial high school student with a distorted view of life and no friends or girlfriend. When he sees his classmates chatting animatedly about living their teenage lives, he mutters, "They're a bunch of liars." When asked about his future dreams, he replies, "It's not working out." A teacher makes Hachiman join the volunteer "work club," which happens to have as one of its members the most beautiful girl in school, Yukino Yukinoshita.
Watari began the original light novels with illustrations by Ponkan8 in Japan in 2011. The final arc of the series began with the 12th volume, which was released in September 2017. The 14th and final volume was originally scheduled for release on April 18, after a delay from November to March, then again to April, but was once again postponed indefinitely.
Oregairu has had two anime adaptations. The first was produced by Brain's Base studio, with 13 episodes, and aired between April and June 2013. The second was produced by Feel studio, also with 13 episodes, and aired between April and June 2015.
The second season covered up to volume 12 of the light novels.
Source: ANN