A short while ago, Apple posted the General Availability, or "GA", versions of iOS 7.0 and iTunes 11.1.
Before upgrading, we encourage you to read our Getting Ready for iOS 7 guide.
You can download iOS 7.0 to your iDevices by navigating to Settings > General > Software Update and clicking the "Download & Install" button. The 768MB installer package will download and install. The download times will vary depending on the speed of your device's Internet connection.
You can also download the latest release of iTunes, version 11.1, from the Mac App Store, Apple Software Update on Windows PCs, or from the Apple iTunes website.