Version 10.0 improves the tooltip balloons that appear when the mouse cursor is hovered over an event, task, or note. The tooltip formatting and content have been improved. Linked files or items will now be shown in the tooltip and can be opened directly from the tooltip. Any links within the item description will also be clickable in the tooltip. A scrollbar will appear if there's not enough space for all the details to appear.
Desktop Calendar Tooltips
Prior to version 10.0, the desktop calendar had to be clicked before tooltips would appear. Version 10.0 will show tooltips for items on the desktop calendar regardless of which window is currently active. The desktop calendar will no longer need to be clicked first.