"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Size Comparison of iPad 4, iPad Mini, iPhone 5 and Upcoming iPad 5
These images are based on the leaked iPad 5 enclosure, which we have reason to believe is indeed real.
The new iPad shell was shown alongside an iPad mini enclosure, providing CiccareseDesign a frame of reference from which to take measurements and produce these mockups. We believe the relative sizes shown in the following images offer an accurate view of how the upcoming iPad 5 will compare in size.
As has been described in rumors and calculated from the rear shell photos, the fifth-generation iPad appears to be notably smaller than the current model, adopting significantly thinner side bezels in portrait orientation and slightly smaller top and bottom bezels.
In fact, our extrapolated dimensions appear to be almost identical to a December claim from Mac Otakara, which specified that the fifth-generation iPad would be 4 mm shorter and 17 mm narrower than the existing design. That report also claimed that the next iPad will be 2 mm thinner than the current model, making it nearly identical in thickness to the iPad mini.
While some early rumors had suggested that Apple might be looking to update the iPad and iPad mini as soon as March, sources with rather reliable track records are now pointing to a later release in the September-October timeframe, and Apple's just-launched 128 GB iPad models support that notion.
The fifth-generation iPad is said to adopt nearly identical styling to the iPad mini, with photos showing a similarly anodized rear shell and reports claiming that it will include the same chamfered edges as on its smaller sibling. The comparison photo above shows the smaller size of the iPad 5 and how it has taken on the design cues of the iPad mini.
The smaller body of the fifth-generation iPad suggests that Apple is making major changes to the device's internals as well. Apple has been rumored to be adopting new display technology that will allow for a thinner display and perhaps a smaller battery, and other components such as the main system-on-a-chip are also likely to see upgrades and rearrangements as part of the significant revamp of its full-size iPad.