Apple almost certainly has received many NSLs, which is why they can only disclose "1000-2000 account information requests" for the first half of 2013 in their transparency report. That number combines law enforcement and national security order requests in order to keep vague the exact number of the latter. If you take a look at that transparency report[1], you can see they come as close as you can to confirming that they have received NSLs when (so far) you can of course not confirm that you've ever received NSLs.
[1] https://www.apple.com/pr/pdf/131105reportongovinforequests3....
>The section carries a gag order stating that "No person shall disclose to any other person (other than those persons necessary to produce the tangible things under this section) that the Federal Bureau of Investigation has sought or obtained tangible things under this section"
So are you suggesting they've received a NSL letter about nothing in particular forcing them to lie in this instance?
moron4hire seems to believe that they would force them to keep the statement (and thus lie), but I'm going to need a source on that.
So whatever their true status is, it cannot be judged from their own statements, as long as we assume that nobody at Apple gives two shits enough to stick their neck out and risk incarceration for violating a NSL.