Wireless data speeds are getting faster and faster, especially with the expansion of LTE, so users can download bigger files with ease. With that in mind, Apple has quietly raised the App Store over-the-air download limit in iOS from 50MB to 100MB. There have been a lot of updates with iOS 7 and many changes that Apple didn't expressly talk about, and this is one of the latter...
Source: http://www.phonearena.com/news/Apple-raises-over-the-air-app-download-limit-to-100MB_id47563
Source: http://www.phonearena.com/news/Apple-raises-over-the-air-app-download-limit-to-100MB_id47563