The linked page is 90% AI and not much about stability. If "the whole point of this update was to focus on fixing bugs and improving stability" they don't say so, so excuse me for not knowing that.

If it's a stability release, then great! But that's not what they're saying. Stability is mentioned once regarding search only. Performance has a very small sub-section half way down the page. Where do they mention the CPU scheduler rewrite, or any of the under-the-hood changes you're talking about? You seem to expect people to know about these things from somewhere else.