Despite the high iOS 7 adoption rate, developers are still working on new and useful tweaks for those with older, jailbroken devices. With an iPhone 5 or earlier running iOS 6.1.2 there are many options available on Cydia. Many of these tweaks simulate iOS 7 features, and others such as MultiLS add new functionality to iOS.
Essentially, MultiLS adds a second lock screen to iOS. Incoming lock screen notifications are stored on a separate lock screen, hidden from view. Instead of popping up immediately, when a new message or alert arrives a slick glowing bar appears on the right side of the lock screen. The text in the slider bar also changes from "slide to unlock" to "slide to view".