No. DTS-X can use the same speaker layout as Dolby Atmos, but Dolby and DTS both have their own proprietary encoding systems. You need the ability to either pass DTS-X to an external decoder (such as an AVR), or decode it within the system before you can use it with your existing immersive speaker setup.
There's not very much DTS-X content, so I doubt this is going to be a big deal. I suppose games developers could add DTS-X soundtracks, rather than Dolby Atmos, but as Atmos is massively dominant (in a small market), I don't think it will set the world on fire. Although, just like HDR, it's always good to see systems supporting all formats, rather than one flavour or another.