You can't get closer to the truth as far as getting clues about future versions of the iPhone & iPad; Lulzsec may have quit the hacking scene but the booty that it has collected during its short existence is still revealing some very interesting titbits.
For example, the AT&T documents that the group got its hands on, talk about the company's expansion into LTE, otherwise known as 4G; and since AT&T sells the iPhone and the iPad and are mentioned in the documents, it is quasi-certain that the iPad 3 and the iPhone 5 will come with 4G capabilities either at launch or at some point in their lifetime (ed: these documents can be found in the "50 days of lulz" file that's widely available on the web).
4G is still in its infancy in the US (and non existent in the UK) and observers agree that much remains to be done before the technology successfully replaces 3G across the pond.
In theory, Apple could use a single chipset for 3G and 4G to limit the number of stock keeping units on the market and to ensure that the iPhone 4 is truly a world phone at launch.
However we're not sure whether that makes economic sense given that they will have to stick with Qualcomm for anything that contains CDMA technology.