The FCC approved the Icom ID-5100 on March 27, 2014. The FCC ID for this new D-Star radio is AFJ348400. This hopefully means that Icom will begin shipping these radios very soon. You can review all of the available information about this radio at the FCC site.
On a similar note, Icom has also published the detailed manual at their web site.
On a side note: Mine has been ordered already, just waiting on it to ship!
source: AB4BJ Blog