If you're looking to outfit your boring iOS 8 App Switcher with some cool new application card transition animations, then you need a new jailbreak tweak called Pyx
by iOS developer Bradley Friedman (S1ReX).
This tweak allows you to apply one of various different animation styles to the application preview cards in the iOS 8 App Switcher. The tweak adds a preferences pane to the Settings application where you can pick and choose your favorite animation and use it on a regular basis:
From here, you can choose between:
- No Animation
- Slide From Top