With the release of SharePoint 2013, Exchange 2013 and Lync Server 2013, Microsoft has introduced a consolidated solution for eDiscovery across those platforms.  Based on the powerful FAST technology for search, you can now have a single place to go where you can help protect content in SharePoint and Exchange by using In-Place Hold, identify and reduce the amount of content with eDiscovery queries, and export the results into an offline format you can hand off for legal review. Read this SharePoint Team Blog entry for more detail.