Eclipse Project 4.3 M2 - New and Noteworthy

Here are some of the more noteworthy things available in milestone build M2 (September 21, 2012) which is now available for download.

Platform
Detached windows with sash When you detach a view or editor into its own separate window, it now has all the capabilities of a normal workbench window. They now support multiple stacks of views separated by sashes with arbitrary layouts. The detached parts will remain synchronized with the master window that they were detached from. This is especially handy for people developing with two or more monitors, so they can spread views across several monitors and keep them synchronized.

Detached window with multiple views separated by sash.

Trim dragging You can now drag toolbars to reposition them.

Dragging a toolbar.

The perspective switcher can also be dragged to the left or right of the window and it will switch to a vertical orientation.

Dragging perspective switcher to vertical orientation.

Import nested projects The Import Projects wizard now has an option to continue searching for projects to import recursively within any project it finds. This allows you to import physically nested projects at the same time.

Import nested projects.

Platform updated to Ant 1.8.4 The platform has been updated to use Apache Ant version 1.8.4. To see what is new in version 1.8.4 you can check the Apache Ant what's new.
JDT
Content assist shows Javadoc in Display, Expressions and Variables view Content assist in the Display, Expressions and Variables view now shows Javadoc:

Screenshot showing Javadoc when doing content assist

PDE
New API Tools EE descriptions feature The API Tools Execution Environment descriptions are now supplied on the Eclipse update sites as a single installable feature. The feature includes the descriptions for all supported execution environments.

New EE Desc feature on update sites

Improved feature selection dialog The feature selection dialog used in wizards and editors has been enhanced with better wildcard support and filtering options.

Improved feature selection dialog

The above features are just the ones that are new since the previous milestone build. Summaries for earlier Kepler milestone builds: