Now it is my time to contribute and I am happy to present the amended stencil which includes some (not all) of the BPMN 2.0 compliant element, including Coreographies and Conversations. As sometimes I use other signs on models some other (non-BPMN) elements are also included in the stencil, feel free to remove them :)
|Click on image to enlarge|
The original (vss format) file is here: http://www.promlegis.net/Home/BPMN_Specifications_v2p0%2B02_stencil.vss?attredirects=0&d=1
My intention is to continue amending this stencil and upgrade it to full BPMN 2.0 capabilities, I will surely inform you when a new version is ready.
---- UPDATE ----
I am sorry to inform you that quite a few elements are not appearing in MS Visio 2010 - I have just tried the stencil, but I don't know yet what is the cause. I will try to find a solution.