Let the tears of joy flow. Following the broadcast of Re:ZERO -Starting Life in Another World- Season 3’s final episode in Japan, the anime’s official accounts confirmed that a fourth season is in production. An announcement video and a teaser visual were shared, along with a commemorative illustration by light novel illustrator Shinichiro Otsuka.
Furthermore, it was also revealed that Konomi Kohara (Urmander in Headhunted to Another World: From Salaryman to Big Four!) voices Rui in the latest episode.
Re:ZERO -Starting Life in Another World- Season 4
Announcement Video
Re:ZERO -Starting Life in Another World- Season 4
Teaser Visual

Re:ZERO -Starting Life in Another World- Season 4
Commemorative Illustration

Based on the light novels by Tappei Nagatsuki, Masahiro Shinohara directed the third season of Re:ZERO -Starting Life in Another World- at studio White Fox, with series composition by Masahiro Yokotani, character designs by Haruka Sagawa and music by Kenichiro Suehiro (Fire Force, Golden Kamuy).
Crunchyroll streams all three current seasons and the OVAs, describing the series like so:
Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he finds himself transported to another world. As he’s lost and confused in a new world where he doesn’t even know left from right, the only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she’s looking for…
Source: Press Release