In Revit 2014, the following layer standards for exporting DWG and DXF files have been updated to reflect the latest changes.

• American Institute of Architects (AIA)
• ISO standard 13567
• Singapore standard 83
• British standard 1192

Also you can find import improvements for IFC, and DWG/DXF.
Textures, line patterns, line weights, and text are now included in 3D DWF exports.

When an imported instance containing 3D solid geometry is exploded in the Family Editor environment, the 3D solids are now preserved. Each 3D solid becomes a free form element, which can be used for cutting, joining, and other form operations. These free form elements can be edited by dragging the shape handles on planar faces.