That's been taken off of the table in favor of the current solution - proposed in the original message in this thread (http://lists.tdwg.org/pipermail/tdwg-content/2011-July/002573.html).

On Thu, Jul 14, 2011 at 4:23 PM, Gregor Hagedorn <g.m.hagedorn@gmail.com> wrote:
On 15 July 2011 00:50, John Wieczorek <tuco@berkeley.edu> wrote:
> It isn't duplicated - it's just suggested for re-use.

With reference to Darwin Core Issue 68: http://goo.gl/Q7TRn I thought
that a new dwc:DigitalStillImage is proposed? -- Gregor