AFAIK there is absolutely no innovation with software defined keyboards, they statically mimic a physical keyboard. I would expect well defined open APIs so that applications tailor the keyboard for optimal contextualized use for that app. The only thing that came close is Apple's touchbar but even that one is quite static and not very liberating in practice. Of course the downside of adaptive software keyboards is that you have a slightly different keyboard layout per application, so mostly a feature for experienced and professional users.