Meanwhile, Apple's iPad 2 continues to be the most popular iPad, accounting for nearly 40 percent of active units. The iPad 2's 38 percent share is more than that of the latest iPad 4 (18 percent) and iPad mini (17 percent) combined, according to the data.
The iPad 2 featured an all-new industrial design, and subsequent revisions to Apple's tablet have added higher-resolution Retina displays and incremental hardware upgrades. Localytics suggests this may be a factor in the iPad 2's continued dominance, saying it is possible that "perceived differentiation of the latest-generation tablets is getting smaller with each new release.".
Apple is widely expected to unveil a redesigned, slimmer fifth-generation iPad on Tuesday in what one analyst called "the most important refresh of the iPad franchise...since the first iPad went on sale." Cupertino is also — controversially — rumored to show off a Retina display-equipped second-generation iPad mini at the event.