Are such stats (readily) available? As the inventory in the app store ages, I hope Apple applies adjustments to its rankings to identify "zombie" apps, those that perhaps had their day but have grown long in the tooth.

I'm not suggesting that an app isn't a good if it hasn't been updated in a while—I still love IA Writer despite it not having been updated in nine months(?)—but increasing app counts make for a looming merchandising nightmare, and Apple (and other app store runners, such as Google, who will have more apps on its hands come 9:02am on August 19th, 2011 according to a market research firm) is going to need to incorporate more signals in its app ranking, selection, and automated merchandising systems.

I would be interested in knowing why you chose this submission title. It seems very dishonest considering 1. the selection bias, 2. the fact that multitasking would not be practical or useful for all of those apps, and 3. it could have just as easily been worded to stress that 69% of apps do have multitasking.

Surely you considered these points when you wrote that title. Surely there was something else in the statistics that was more worthy of note, but it wouldn't have awarded you the same degree of attention.