Lead Details window now allows
(1) Ability to add your own tabs with activities that matter to you.
(2) View tabs in a list and navigate, set default.
(3) Refresh the contents of tab
(4) and drag/drop tabs horizontally to re-order them
For more information regarding this changes, refer to
How-to-add-and-manage-activity-tabs-in-the-lead-details-window/
