From BlenderWiki
The plan
1) OpenCollada integration
2) Exporter/importer(module) integration. Directory structure
3) Primitive UI integration. Will be "raw" at this stage since purpose - testing. Will evolve into something better.
4) Blender API - getting to know geometry, materials, textures - how to access for reading/writing
5) Coding the geometry part - export/import. There is already a COLLADA script working well with geometry. I can use it as a ref.
6) Animation - "terra incognita" for me :-). Will consult documentation, devs and code.
7) Coding the animation part - animatable objects (nodes), then animatable armature along with skin weighting import/export
8) Testing/Validation - will probably need user-submitted models.
Testing/Validation
COLLADA DOM source comes with sample .dae files. Also there's an official collada model repository with a few samples, some samples here. And there's a good example of how an exporter can be validated.
