Shock, yeah! As a fan of Marvel 2099 who's been dying to see a good take on Black Panther within that future setting, this looks awesome. I'm just hoping this particular version of Black Panther 2099 doesn't end up being a puppet ruler for Doom or some other "Big Bad" like the Marvel Knights 2099 version did.
Based on Ridley's run so far, it's one of T'Challa's special covert agents in what is apparently standard-issue Kimoyo bracelet-summoned combat armor. The skull mask just makes them look somewhat like Crossbones.