Apple and Sprint are preparing to launch a new version of the iPad 2 at the same time or shortly after a Sprint-compatible iPhone 5 is unveiled this fall, a new report claims. 9to5 Mac states that Apple and Sprint have completed development of an iPad 2 that includes an embedded cellular radio compatible with Sprint’s data network. It is unclear which Sprint data network the tablet will support: the carrier’s older 3G network, its 4G WiMAX network or perhaps even both. No previous reports indicate that Apple has conducted any late-stage development with WiMAX — which Sprint is shifting focus away from moving forward — so a 4G-enabled iPad 2 may not be likely at this point in time. The report also notes that Sprint may offer its unlimited data plan with the iPad 2, as it is expected to do with its iPhone 5.