I think what happened was that SCOTUS thinks the NRA v Chicago case duplicates the McDonald v Chicago case and was abeyed until McDonald is decided.
You can see NRA v Chicago was neither granted nor denied certiorari by going tohttp://www.supremecourtus.gov/docket/docket.htmland searching for08-1497, then following the same link on the nextpage.
The NRA submitted an excellent merits brief for McDonald, and many other groups also submitted amicus curiae briefs supporting McDonald. The text of the briefs can be accessed via http://www.abanet.org/publiced/previ...ed.html#081521
It is very interesting to read the "in favor of neither party" brief of the Brady bunch. It was obviously written by someone who sees incorporation resulting from this caseas a slam-dunk. For Heller, Brady wrote a brief for DC's side, this time theyhave a neutral stance.