pdb1:See new Officer permissions, including the ability to email all club members, invite new members and change club messages.
True, with the extension that you may give these rights to any member category. Different reports about the email function though - it has long time been uncertain for owners.
Examine the owner's tools!
pdb1: You can also now select different tee boxes for each hole in CC tournaments for all new challenges.
True - dunno if there is a CC level limit.
Furthermore, from this ad,
the new leaderboard exists in the game client's CC part, but it's unclear if it's working and a total miracle to me which sense it should have:
The other improvements in your list are either obvious or apparently true - no more complaints to be seen.