JBuilder 2008 is just now came from codegear, following are the versions of JBuilder2008 

JBuilder 2008 Enterprise
JBuilder 2008 Enterprise provides a complete, enterprise-class Java IDE with collaboration and team development support based on the TeamInsight™ and ProjectAssist™ functionality, full support for UML 2.0 modeling and code archeology, and the newly introduced Application Factories which delivers unprecedented developer productivity and code reuse. JBuilder 2008 Enterprise also includes the new Progress Tracker capability which enables development teams to continuously monitor and measure the impact of performance changes by allowing them to compare visual snapshots of their progress; the new CPU root filter capability which enables developers to isolate and narrow down profiling; and the new ProbeKit functionality which enables dynamic and static instrumentation of an application.

JBuilder 2008 Professional
JBuilder 2008 Professional adds expanded support for the Java EE 5 platform and Web services development including visual EJB, JPA and Web services designers, as well as supporting deployment to leading commercial and open source Java application server. In addition, JBuilder 2008 Professional includes memory and CPU profiling tools, performance tuning tools, sophisticated Swing design capabilities, basic UML modeling features, and LiveSource® for Java with full two-way code and visual code diagramming.

JBuilder 2008 Turbo
JBuilder 2008 Turbo is available as a free, turnkey Eclipse bundle which provides the basic features and functions needed to create and deploy Java applications to today's leading commercial and open source application servers. The entry level member of CodeGear's renowned JBuilder family, JBuilder 2008 Turbo can easily be enhanced with powerful development tools such as the JGear plug-ins to add graphical RAD productivity, code performance profiling and debugging, and team collaboration features.

You can download JBuilder 2008 free at http://cc.codegear.com/free/jbuilder