This Facebook page lists quite a few leaked photos. I have also provided a link to a leaked video. Descriptions are in spoiler tag to hide from people who don't want to see.

This is the official MK movie poster has it appears inside theaters here in America:
https://www.facebook.com/arquivomortalkombat/photos/a.506477002876690/1597304500460596/

Nathan Jones swinging a huge hammer: https://fb.watch/36QldxhkhX/ At this Facebook page, we see many BTS photos and learn Nathan Jones is officially Reiko. The photos reflect what we seen in the publicity photo from EW with Jax fighting off a hammer. https://www.facebook.com/arquivomortalkombat/