It's not so much a "bump" as a cycle. They release a phone every year, this was that quarter. Clearly they won't sell the same number of units next quarter. Their competitors ship far more (and more varied) products and don't really show that kind of behavior. So next quarter we'll be treated to "iOS is shrinking!" posts which are equally silly. And next fall the circle of life will repeat.
As you correctly point out, the real news in this data is that Blackberry sales dropped by 80%, which is so shocking that I wonder if a digit got slipped somewhere.
"so shocking that I wonder if a digit got slipped somewhere."
Sounds like Verizon flipped a certain digit at RIM. Possibly a good amount of August 2012 iPhone syndrome as well, "don't buy a Blackberry now, the new ones are coming in January"
As you correctly point out, the real news in this data is that Blackberry sales dropped by 80%, which is so shocking that I wonder if a digit got slipped somewhere.