Apple released iOS 7 beta 5 today to developers, hopefully bringing some new features and bug fixes to the next version of Apple's mobile OS. This is a quick turnaround between versions as Apple just released beta 4 a little over a week ago. You can download the latest version over-the-air via Settings > General > Software Update on devices running the current iOS 7 beta.
Besides iOS 7 beta 5, Apple also released a new beta version of Apple TV 5.4 to developers. Developers can download iOS 7 or the Apple TV software manually from Apple's developer website.