What brokers and prop firms in this directory altered, and when it was recorded here.
Firms change their terms without announcing it. This log is written automatically whenever an entry in the directory is edited, so it records the difference between what the page said before and what it says now.
The date is when the change was recorded here, after checking the firm's own site. It is not necessarily the day the firm made the change. Always confirm current terms with the firm before you pay for anything.