SuperSU, or SuperUser, is a utility application known and loved by thousands of users running rooted Android devices. It's an application designed to regulate and log elevated permission requests from other applications on a rooted device. To avoid wishing to scare you, when you root a device, you open it up to all sorts of mischief. Chainfire, the SuperSU developer, has released a significant upgrade to the application following the move from Android 4.4 (KitKat) to 5.0 (Lollipop). Chainfire writes in a Google+ post that it has been a difficult process to move from Android 4.4 to 5.0, thanks to the many changes between the Android versions. Specifically, how Android 5.0 Lollipop has a different and more secure way of dealing with things. The post - hit it up as the source if you're interested - explains how some issues he ran into here originally solved one way, but had to be unwound and solved another way. Indeed, it reads as though Chainfire has been through quite the voyage of discovery as Google released successive updates to the Android Lollipop preview.
Chainfire's post also writes about the theme of the application, which is some way removed from Google's new Material Design ethos. The application interface and layout isn't a priority at the moment. As SuperSU covers devices from Android 2.x and upwards it already includes many different ways to organize itself on the screen. As such, SuperSU has been given a tilt towards Material Design, but it'll not receive a full interface overhaul anytime soon. Chainfire does welcomes mock-ups of the interface, however. He has also made some improvements to how we can donate to him for his fine work including an alternative away from PayPal. There's also a warning that the roll-out of the latest version may have some hiccups given the changes in the application, so please bear with him!
Chainfire's informative post on Google+ (where you will also find the download links) as well as the developer feedback from the team responsible for Lumific. Highlight one of the reasons why I enjoy the Android scene so much. Developers are supportive of the user community and will interact. If a developer takes the time to comment on their feedback and offers a fix, which then later arrives. This will encourage me to support their work going forwards. Well done Chainfire!