Confirmed!! The Devil Is a Part-Timer! is getting a SEASON 2!!!
The PV for the first season looked different from the ones that were shown so you may need to expect that the trailer for season 2 would have some changes with its release.
I highly recommend watching Hataraku Maou-sama! (The Devil Is a Part-Timer!) for I enjoyed it very much and continued to read its light novels when it was still available on Baka-Tsuki's website.
It's kinda sad that the story already ended in the novel but nevertheless all good things must come to an end.