Today we have released Hotfix-1 (build 3267) for ArchiCAD 15. Please note that besides a large number of IFC and Teamwork related bugfixes this hotfix contains important functional changes necessary to run BIMx with extended functionality. Due to this the hotfix has been released simultaneously for all localized versions of ArchiCAD 15 already on the market.
You can read the Release Notes, the List of Fixed Bugs and details about the functional changes here: