It doesn't really excite me. I am happy with what I have (Axe-FX III and FM9). While the feature set looks like it will be industry leading and innovative, I don't find the currently announced new features to be things that I'd personally use. Innovation and fierce competition are great for moving the industry forward, so I do applaud that and I look forward to seeing how Line6 develops the product down the line.
A big component of it for me is that I've invested a lot of time into learning the Fractal ecosystem. The FAS gear has proven to be great sounding, reliable, and easy to use live (excellent foot switching capabilities). If I'm going to have to learn how to use another platform there would need to be a non-trivial payoff in terms of audio quality or features that I intend to use. I haven't been convinced that the HX Stadium will offer a significant improvement in terms of what matters while actually playing the guitar. Perhaps the actual product launch will convince me to get onboard once they start to release walkthroughs of the features and we get to hear / see what it can do.