After the fiasco of the previous one informations 8.0.1 (reminded you of the updates of Microsoft;) Apple seems to have reacted fairly quickly by delivering the news to its dissatisfied customers iOS 8.0.2. Probably some did not sleep until the release of the new version.
You can download this update via OTA and it is relatively small. For devices iPhone 5S does not exceed 20 MB. Of course the update contains bug fixes.
It is already installed on the 5s
It is already installed on the 5s