When is the Brave referral rate changes?

I received an email informing me that the brave referral rate starts on October 1.
But in the photo here is December 1.
Where is that true?
October 1 or December 1?
Capture

cc @Mattches on this☝️

The referral rate changes go into effect October 1st, and note that you will not see the change in calculations until the 31st, as confirmations take ~30 days to confirm.