As we predicted in previous publicationThe Apple Lossless Audio CODEC (ALAC), an update was immediately released for iOS 8.To iOS 8.0.1 is here and currently distributed by company via OTA (71,5 MB for iPhone 5S). The ipsw versions for updates via itunes they will be released soon.
If you are in a hurry to do it anyway upgrade you might want to keep in mind what they're saying on Twitter about this release.
https://twitter.com/dsilverman/status/514827298629885954
What does the new update bring?