https://www.techradar.com/news/dashboard-is-dumped-from-macos-catalina-and-some-folks-arent-happy

Some major changes are being ushered in for macOS Catalina, with iTunes being killed and split into three separate apps for one thing, and it seems another long-standing feature has been given the boot in the form of Dashboard.

If you’re not familiar with it – and you may not be, since Apple hid and turned it off by default in OS X Yosemite, some five years ago – Dashboard is a convenient collection of widgets allowing quick access to the usual sort stuff (weather, checking sports scores, TV listings, and so on, with many third-party widgets).