Do you have plans to support IFC4?

xBIM complies with both IFC2x3 (TC1) and IFC4 (Add1) standard. We are have already implemented IFC4 completely and it is possible to use IFC4 interfaces to work with IFC2x3 data so it is possible to develop and maintain single codebase which is IFC schema agnostic.  If you have specific needs, please let us know and we can factor these in.  
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