9/1 UPDATE:
The Cubs have selected the contract of RHP Shane Greene from AAA Iowa and he has been added to the MLB Reserve List (40-man roster).
8/30 UPDATE:
The Cubs have released LHRP Richard Bleier.
8/26 UPDATE:
The Cubs have sent RHRP Edwin Uceta outright to AAA Iowa (so Uceta is now eligible to be an MLB Rule 9 minor league 6YFA post-2023 if he does not sign a 2024 minor league successor contract or get added back to the Cubs MLB Reserve List by 5 PM Eastern on the 5th day after the final game of the 2023 World Series).