Ray tracing (Shadow of the Tomb Raider)

Please tell me, is there currently support for ray tracing, the same technique that was shown in the demos? And then asked who buys the game screenshots of graphics settings, and that there is not found RTX OFF/ON. And also heard something about the opinion of some Windows update that is associated with the trace. So do not understand this point, perhaps you know?)

P. S. in Order to prevent mess - I don't care what you think about this technology, and cards that support it. I wonder only one thing: did it already, and if not, when?