What's in the files the NSA dribbled out after its Xmas dump?

Patrick writes, "The NSA dumped its IOB reports on Christmas Eve, except that it was
short 15 files, I pointed that out, next dump was silent but an
additional 12 files, I pointed out the three missing files, and as of
today, the three extra files were added, but the extra 3 files have a
different naming convention."

Data analysis resources should be focused on the 3rd quarter report for 2010 and 3rd quarter and 4th quarter reports for 2009, especially as compared to other materials (Snowden?) for those time frames.

My heuristic being that people don't delay without a reason. It isn't necessary to know the reason, just to observe the delay.

NSA IOB Dump Finally Complete!