From Fedora Project Wiki

Eclipse

This release of Fedora includes Fedora Eclipse, based on the Eclipse SDK version 3.4. The 3.4 series of releases has a "What's New in 3.4" page , and release notes specific to 3.4 are also available.

Some of the notable features in 3.4 include a number of improvements in handling bookmarks, easier ways to find and install plug-ins, and additional help with refactoring.

Translations from the Babel project [eclipse-nls]

This release also includes the Babel language packs, which provide translations for Eclipse and Eclipse plugins in a number of languages. Note that some of the languages have very low coverage: even if you have the translations installed, you will probably still see many strings in English.

Upgrading from Fedora 9

Users upgrading from Eclipse 3.3 will need to migrate any plug-ins they have installed from sources other than RPMs. The simplest way to do this is to re-install. For plug-in developers migrating from 3.3, see the Plug-in migration guide.