updated 01:33 pm EST, Wed January 29, 2014
Fixes problems with Chinese cellular networks
Apple is now seeding a rare iPhone-only iOS update, v7.0.5. The release is intended exclusively for the iPhone 5s and 5c, and deals with unspecified "network provisioning" problems on some Chinese models. For people who already have iOS 7.0.4 installed, the download is just 35.4MB when fetched via Software Update.
Normally iOS updates apply universally to the iPhone, iPad, and iPod touch. The unique targeting of v7.0.5 suggests that Chinese iPhone users were encountering a serious problem, forcing Apple to act immediately instead of wrap any fixes into a bigger release.