The beta for Minecraft with RTX is now available on Windows 10. You can download it, play it, and if your PC supports it, you can even enable real-time ray tracing via RTX. There is also support for physically-based materials and NVIDIA DLSS 2.0. Of course, you'll need to have a supported GeForce RTX GPU to actually make "proper" use of the tech.
A quick RTX on vs RTX off comparison can be seen below.
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