It is possible to customize your iOS 8 iPhone and bring some iOS 9 inspired features to your Apple smartphone with Notification Center tweaks iOS 8 you can find on Cydia store. You know that Saurik allows tweaking its Cydia now but we are able to bring rounded corners to some of your UI elements.
There is special iPhone Notification Center round corners tweak that is created by Zach Russell. The program we have on mind is called Roundification. You see that even its name explains what this package can bring to your iOS 8 device.
How to Add Rounded Corners to Notification Center / Banners iOS 8
Step 1. Before you launch Cydia and find the tweak you should add a new source to your repos: http://zachatrocity.com/repo.
Step 2. Open Cydia store and download Roundification tweak.
Step 3. Install the program on your iDevice.
Step 4. It’s great that there is nothing to configure in this Cydia package.
Step 5. Once the tweak is installed you will notice how Notification banners and Center change their appearance and get rounded corners. This will provide a new floating affect to your iOS 8 firmware version.
Step 6. Now you can enjoy getting some iOS 9 inspired [here is how to install iOS 9 beta 1 on your iDevice] visual change on iOS 8 elements as different banners [even Quick Reply] will look more rounded.
According to developer, his tool Roundification should get an update soon. It should get the preferences pane with more options. And once this program gets final look you will be able to download it from the official BigBoss Cydia repository.