Seems like they weren't defining exactly when the "2022 Junior Olympic Playing Season" started/ended in the 2022 procedure manual, and are now clarifying this. No changes really, except I guess for tournaments that happened in the fall.
As far as I knew, for most if not all sanctions, the age division eligibility was based on the age of the player on December 31st, effectively the birth year is the only thing matter.
But I've been told that USA softball did change that recently, so now what matters is the age of the player on...