The question mark in the headline appears only because these haven’t been officially confirmed by Mattel.
Looks like we’re getting Lynda Carter as Wonder Woman, John Wesley Shipp as The Flash, and
Michael Keaton Val Kilmer as Batman 6″ action figures as part of the DC Comics Multiverse line by Mattel. Hopefully more information on these will be available soon as we get closer to Toy Fair International taking place in New York 02/17/18-02/20/18
UPDATE: According to They’re Action Figures, this line will be called World’s Greatest and the rumor is that these will be Mattel online store exclusives with UPC# 887961605495, priced at $30.00 each, and available for purchase 02/17/18
Thank you to Luke Peters for the heads up.