The fourth season of "Re:Zero. Starting Life in Another World" has 19 episodes in two parts on April 8 and August 12
About a month before the new episodes arrive, White Fox put out a poster showing the core cast and dropped the broadcast schedule. The season opens April 8 with the "Loss" arc (11 eps), pauses, then picks back up August 12 for the "Return" arc (8 eps) — so 19 episodes total, split into two runs. Fans can mark the dates (or nervously refresh their feeds), since the break sits squarely between the two halves.
The studio also shared a short video featuring a fragment of the ending song, "Ender Ember," performed by MYTH&ROID — longtime contributors to the series — and TK from Ling Tosite SIGURE. The clip, brief as it is, hints at a moodier ED; MYTH&ROID bring their usual style (e.g., Overlord, The Ancient Magus' Bride) while TK adds his familiar edge (Psycho-Pass, Tokyo Ghoul).