Here is the latest OM System lens roadmap as of September 2022 (click for larger view):
After the OM System M.Zuiko Digital ED 90mm f/3.5 Macro IS PRO, two more lenses will be released in the 50-200mm and 50-250mm ranges based on the above roadmap:
OM System announced the development of a new M.Zuiko Digital ED 90mm f/3.5 Macro IS PRO lens
