You can see one of the titles above - 'Batgirl' #40 (inspired by 'Purple Rain') by Cliff Chiang. There are 22 covers in all, and you can check out all of them over on Jim Werner's blog Weird Science.
The official DC Comics blog also has the image gallery at the link below.
Check out the full gallery of movie poster-inspired variant covers coming your way next year: http://t.co/rDCONBzgJz pic.twitter.com/exioWZ5baE
— DC Comics (@DCComics) December 12, 2014