Cortana's latest animation.
This doesn't mean that Microsoft isn't still making modifications in response to user feedback. Flash in Edge is going to be click-to-run, and the latest Windows build will make it more obvious that Flash content has been blocked and can be manually re-enabled. The company is also refining the way Edge handles EPUB books so the browser can serve double duty as a reading application to support books sold through the Windows Store.
Microsoft is also continuing to work on the out-of-box experience (OOBE). In the Creators Update, driving the initial system setup through voice commands will be possible using Cortana—and there's a new animation to support that. Presumably, this is preparatory work for a time when headless Cortana systems become available.
from As Windows 10 Creators Update nears completion, new build focuses on fixes