Highcharts version 3.0.8 was released today, bringing so many new features that we realized too late it should be called 3.1! In addition to a ton of bug fixes and some speed improvement, these features are new:
NO DATA TO DISPLAY
You requested a simple way to tell your users you have no data to display. Check out the no-data-to-display module.
For charts with high data density, users have requested crosshairs that are not snapping to the closest point. In order to achieve this, we disconnected the crosshair logic from the tooltip, instead assigning it to the axis itself. Check out the axis crosshairdemo.