Good development so-far, but that Seagal isn't mentioned or seen could have a lot of reasons. Maybe he got ill? Two weeks ago I was ill, the weather around the globe isn't perfect.
Moreover if he is playing the antagonist, a sniper, his scenes will be random. He will kill his opponents from the distance, without revealing him. Like a ghost. And this efforts no time-consuming scenes.
Another possibility is his real-life police work. Sure he will inform his colleagues that he will shoot another movie, but what if the police superiors say: "We understand you Steven, but we need you here first"?
We can't exclude nothing until the next weeks.