GtkRadiant has released a beta version of 1.5.0 which is a major upgrade for mappers of Doom 3. Some of the D3 specific updates:

- Fixed dragging of doom3 brush-entities.
- Added inheritance of doom3 entityDef 'editor_* *' keys.
- Added support for doom3 entityDef 'editor_* *' keys other than 'editor_var'.
- Changed shaders module to load *.mtr for doom3 instead of using shaderlist.
- Extended doom3 material parsing.
- Changed doom3 materials to use 'diffusemap' when 'qer_editorimage' was not specified.
- Changed doom3 brush texturing to generate correct UVs when faces point along +/-Z axis.
- Fixed mirroring on brushes with doom3 plane-defs.
- Fixed patch shader-name saving for doom3 patches created by user.
- Fixed stability problems with doom3 brush-entities.
- Added doom3 entity-definition editor_usage* key support.
- Added doom3 entity-definition editor_* key info to entity-inspector comments.
- Added support for rendering doom3 'targetN' -> 'name' entity connections.
- Changed connect-entities to use 'targetN' and 'name' keys on doom3 entities.
- Added basic rendering for 'curve_Nurbs' on doom3 entities.
- Added basic rendering for 'curve_CatmullRomSpline' on doom3 entities.
- Added component-editing for curves on doom3 entities.
- Added normalisation of translation for texture-lock on doom3 brushes.