Microsoft is continuing to add -- and remove -- various features with its ongoing test releases of Windows 10 19H1. The newest test build, delivered on Janaury 16, removes Cortana from Search, as had been widely expected and already had been in testing with some Insiders for "a few weeks."
With Windows 10 19H1 Build 18317, Search and Cortana are decoupled in the taskbar. Microsoft's explanation for the decision is "this will enable each experience to innovate independently to best serve their target audiences and use cases." A number of Windows users never understood or appreciated Microsoft's original idea of co-mingling Cortana and Search.
Microsoft also is making changes to font management in Build 18317. Today's new Fast Ring build also includes a number of fixes to the Windows Console, along with a host of other updates and fixes across the product as a whole.