According to this post of Christian Halstrick and those two commits: 1 2. The upcoming version of JGit and EGit would have merge support! The previous stable version (0.8) had only support for fast-forward merge; all non fast-forward merges must be done using CGit, now all kinds of merge can be done using EGit UI.

The 0.9 version would have more cool features eg. History view improvements, branch and tag dialog improvements and (of course) support for Synchronize view. Say tuned for a full list of new and noteworthy that will be published in upcoming days.