Microsoft has recently announced the release of Visual Studio 2013 Community Edition, which they claim is a full featured IDE.
Indeed, they mention features like add-on support (eg. ReSharper) that were major feature gaps in Express Edition.
They are less clear about what features Community Edition does not have. There is a comparison of VS editions, but it does not appear to include Community Edition.
What features does Community Edition not have, that at least one other Visual Studio 2013 edition does?