Release Notes: Stacked bar charts work a lot better.
Release Notes: Radar charts and better tooltips were added. Memory consumption was reduced for AJAX applications.
Release Notes: A new bar chart style: sketch bars. Better PHP support, Java libraries and .Net libraries, and a simple, easy to use Perl library.
Release Notes: This release adds new chart types: candle (or whisker); high, low, close; and scatter (you can plot x,y points). .NET libraries are now available, so now all the major platforms are supported (PHP, .NET, Python, Perl, and Java). The model-controller-view type of coding is now supported.
Release Notes: The PHP was updated to enable 3D charts and glass charts. Some more options were added to the other graph types.
Release Notes: This is a developer preview release, and includes lots of minor bugfixes.