Issue #1 of the new Wonder Woman DC series comic book is free at Comixology to celebrate Wonder Woman Day on 3rd June. Not the movie adaptation but that could be a good thing.
Here's the spiel:
Celebrate Wonder Woman Day on June 3 with two free special edition comics! Be sure to get your copy of Greg Rucka’s WONDER WOMAN #1, the start of Wonder Woman’s newest series! Why has the lasso of truth stopped working for the Amazon Princess? Start down the rabbit hole as dark secrets from Wonder Woman's past unravel her present!
A few comic stores are offering free ones as well;
https://www.previewsworld.com/Article/194493-DC-Celebrates-W…