Today is a great day for the jailbreak community because Saurik (developer for Cydia) released an update for Cydia Substrate (formally known as Mobile Substrate).
Substrate 0.9.5000 has been released, with support for iOS 7 and ARM64. (For extensions to work on ARM64, they must be recompiled to ARM64.) – Saurik
What does this mean?
This means Cydia Substrate is now compatible with iOS 7 & A7 devices (iPhone 5s, iPad Air, & iPad mini with Retina display). You’ll be able to run your favorite Cydia tweaks and apps. But do note many tweaks & apps must be updated for A7 devices. At the moment, there are a few tweaks compatible with iPhone 5s. What I’ve tested out so far is Zeppelin, f,lux, & Simplock. If you find more compatible tweaks with A7 devices, feel free to shoot us a tweet or Facebook message. We’d like to know your favorite tweaks!