It’s from the proceeds of KIM’s sale of some of its Albertson’s shares recently:
“The Merger Announcement further specifies that part of the cash consideration will be paid in the form of a $6.85 per share special cash dividend on November 7, 2022.”
Oops! Looks likes I misread that news release. That special dividend is the dividend being paid to Albertson’s shareholders including KIM, as part of the merger consideration with Kroger. There will be a KIM special dividend paid to KIM shareholders by the end of the year but the form and the amount has not been announced.