We are glad to inform you that in the nearest weeks you can receive the first version of "Library Items".
The project is divided into parts. Each release has support for new type of elements. First version will support Materials.
For materials the next rendering engines will be supported:
Blender Render (done)
YafaRay (in progress)
LuxRender (in progress)
V-Ray (in progress)
For now commerce is not supported. There will be some limitations in number of publications in “Online User Library”. There will be the rule 1 to 3: every third element should be public. And for local library there are no limitations.