SDCC: Harley Quinn Takes Over Batman Day 2017

Batman Day, September 23, has been a day to celebrates all things Batman. DC has been putting out free comics to celebrate, such as last years Batman #1. This year, our friend Ryan H. has reported from SDCC, that Harley Quinn will take over Batman Day 2017
Ryan sent us this simple picture that shows Harley has taped her name over the Batman Day logo, but the date, 9/23/17, remains the same. Does this mean free Harley books in September?