Major new features are:
A Debugger for Xpand and Xtend
Product Line Engineering (using XWeave and Xvar)
Textual DSLs with Xtext
Hyperlink navigation in many editors
Refactoring for Xpand templates
A totally reworked documentation, available as PDF and Eclipse online help
3hrs of videos available demonstrating the use of simple to complex features
Improved overall performance
See the New And Noteworthy for details.
openArchitectureWare can be downloaded from the Eclipse website.