The Apache POI version 3.6 support read/write office 2007 file format. Please add this version to the bundle repository.
From the updated FAQ:
What is the current status of the repository?
The repository is frozen but will remain accessible until at least 1 September 2014. See http://www.eclipse.org/ebr/ for information regarding the Eclipse Bundle Recipes project to which users of the SpringSource Enterprise Bundle Repository should transition.