There's an update to iOS available to download now. iOS 7.1.1 became available this morning and as usual, contains "improvements, bug fixes and security updates."
A few of the improvements deal with Touch ID fingerprint recognition, according to the Learn More document associated with the update. In addition to those improvements, which of course will apply only to the iPhone 5s, Apple notes that 7.1.1 also fixes a bug that could impact keyboard responsiveness and fixes an issue when using Bluetooth keyboards with VoiceOver enabled.
Security update information will be available shortly at http://support.apple.com/kb/HT1222