Summary of Stephness: Steph only appears on the variant cover.
Behind the Scenes: On October 22, 2019, artist Kendrick Lim posted his variant cover set done for Comics Elite as a retailer exclusive for this title: https://www.instagram.com/p/B36Fc0dA6TI/
Later that day, the retailer put the issue on sale: https://www.comicselitecomics.com/collections/blackest-night-kendrick-lim-exclusive/products/dark-multiverse-blackest-night-1-kendrick-lim-exclusive-11-6-20?variant=30929634033767
They also put the virgin (textless) zombie variant version on sale: https://www.comicselitecomics.com/collections/blackest-night-kendrick-lim-exclusive/products/dark-multiverse-blackest-night-1-kendrick-lim-virgin-11-6-19
The choice of Steph as Batgirl wielding a Black Lantern ring was very reminiscent of the Black Mercy inspired vision of Steph as a Blue Lantern fighting Black Lanterns in Batgirl #24.