There doesn’t appear to be a confirmed replacement for Jeremy Yun on The Runarounds yet. The only recent item I found says Yun will be pursuing other things outside of music, but it does not name a successor.

What’s known

  • Jeremy Yun’s departure is being discussed publicly, but no official replacement has been identified in the material I found.
  • Older cast coverage still lists Yun as part of the main Runarounds lineup, which suggests the change is either new or not yet fully reflected in coverage.

Practical read

  • At this point, the safest answer is: no publicly confirmed replacement has been announced.
  • If you saw a rumor or forum post naming someone, it’s likely speculative unless backed by an official cast update.

TL;DR

Jeremy Yun seems to be stepping away, but I found no confirmed replacement name for him on The Runarounds yet.