Twelve Jokers NOT Three Jokers?! Updated and Complete Batman: Three Jokers #1, #2 and #3 Variant Covers Checklist! All 15 Covers! (Sans Spoilers)
Below is the first iteration of the checklist.
Here is the updated final version.
Batman: Three Jokers #1 is in stores on August 25, 2020.
Batman: Three Jokers #2 hits stands on September 30, 2020.
Batman: Three Jokers #3 is in stores on October 28, 2020.
Batman: Three Jokers hardcover collected edition hits stands on November 11, 2020.