If it's not mentioned in the Release Notes, it's not part of the Game Update.
Regarding your two points specifically:
Neutral Traders/Kahina - We were unable to reproduce this issue so far. To further investigate, we would need a savegame that is affected by the issue.
Fertilities - Same here, we are not able to reproduce this and would also need a savegame.
Do these issues only appear on your existing savegames (all of them?) or also on newly created ones?