Google had recently made a huge splash in the mobile scene when it announced that it was going to launch the first developer preview of Android N a couple of months earlier than everyone had expected. Now, the search engine giant is back as it launches the second developer preview of the up and coming version of the mobile operating system to people who are already enjoying the first one. Here are four of the most important changes and new features that have arrived.

1. The Mountain View-based firm starts off by adding a new 3D rendering API named Vulkan, which will greatly help developers deliver a “significant boost in performance for draw-call heavy applications.”

2. Users can also now define shortcuts that users can bring in to the launcher in order to help them perform tasks in quick succession. According to Google, “these shortcuts contain an Intent into specific points within your app (like sending a message to your best friend, navigating home in a mapping app, or playing the next episode of a TV show in a media app).”

3. For the second developer preview of Android N, Google is also bringing in a new emoji design that makes people emoji change to a more human-like design. For keyboard and messaging app developers, Emoji Unicode 9 can be incorporated into such apps. The new update also brings support for skin tone variations.

4. Google has also made a number of glitch and bug fixes in the second developer preview of Android N, and those include issues that have been reported through the company’s public issue tracker.

Users who are interested in trying Android N out and having a go at the upcoming mobile operating system can get the update by enrolling their handsets in the Android Beta Program. However, it’s important to note that the beta isn’t open to all smartphones, with only the Nexus handsets and Google’s Android One smartphone being the compatible devices as of the moment.