A few packages of Revit Extension 2014 have been released on the Autodesk Exchange App Store.
Find them all here: Autodesk Exchange for Subscription or Free
Civil Structures for Autodesk Revit 2014
Frame Generator for Autodesk Revit 2014
SDNF Import/Export for Autodesk Revit 2014
Composite Design for Autodesk Revit 2014
Excel Based Model Generation for Revit 2014
Timber Framing for Autodesk Revit 2014
Grids Generator for Autodesk Revit 2014
CIS/2 Import/Export for Autodesk Revit 2014
Compare Models for Autodesk Revit 2014
and MORE…
You can also get them directly through subscription center.