The battery fix is expected to give Apple iPhone 4S users 10 hours of active use. Apple's own information reveals that the handset should get 200 hours of standby time, up to 8 hours of 3G phone calls, as much as 6 hours of browsing time and 10 and 40 hours of video and audio playback respectively.
Macerkopf.de hasn't had a perfect record with its forecasting of Apple events. Earlier this year, the site predicted that Apple would introduce iOS 5 and a newly updated MobileMe at an event in early April, but Apple did not reveal the OS update and iCloud until June at WWD. According to Macerkopf.de, Apple is putting iOS 5.0.2 on hold because it doesn't want to release the software and then rush out iOS 5.0.3 to make minor repairs so soon after rolling out iOS 5.0.2.
source: Macerkopf.de (translated) via AppleInsider