Changes in 4.0 version include:

• DJ now requires JasperReport 4.1.1+
• Removed support to JDK 1.5. Now compiled against JDK 1.6
• Removed dependency with POI-3.5-FINAL. We now use POI from JasperReports dependency
• Added test dependency to DynamicJasper-core-fonts-1.0 in order to prevent missing fonts. Fonts added are: Arial, Times New Roman, Courier New, Comic Sans MS, Georgia, Verdana, Monospaced.
• Fixed problem with custom expression in subreport: (see forum entry) ,The test SubReportBuilder3Test demostrates how it works properly
• Fixed problem with border colors (see issue) ,The test StylesReportTest demostrates how it works properly.

Get it from the download page!