I would add to my estimated CDX4 revision timeline that, based on the press release today stating publicly that the CDX4 platform is being released, the alpha testing was completed around fall of 2009 and the beta testing completed earlier this year (2010), further indicating DM's non-involvement in its substantial development. It could be possible that he weighed-in on the CDX4 alpha and beta counter revisions prior to its final release, but the lion's share of the work was completed prior to his arrival on the BoD, IMO.
Cheers,
DG