We are launching a set of features that improve working with lots of dashboards.
New way to represent dashboards as tiles with a thumbnail and improved visuals for the old "boxes" representation.
Dashboard groups to organize dashboards by purpose
Favorites that allow any user to select own set of frequently used dashboards; with one or more favorites, the Favorites group will open by default instead of the last accessed dashboard.
Improved way to hide the initial sample dashboards without having to delete them.
You can read more in the docs here.