so far DWG can be imported only as document. Bimplus is importing 3D model files IFC, SKP which in our opinion are open collaboration formats - platform neutral. It is not in our roadmap to extend these formats in near future. We provide however open collaboration platform where you can export models to IFC and use in editor/viewer of your choice. In addition Bimplus free revit plugin also supports upload of DWG files (as documents/attachments only) and import of Revit model directly to Bimplus.
Here you can follow our latest development news: https://doc.allplan.com/display/BIMNEWS/Release+Notes
Our roadmap is not yet public (we think about it), I can only tell that new features will greatly enhance existing BIM workflows. All important information will be communicated via Bimplus notifications and Bimplus dashboard.