https://wccftech.com/everything-thats-new-in-the-android-p-developer-preview-3/

Every iteration of the Android P developer preview brings with it a mixed bag of major and minor QoL changes which may or may not make it to the final release. This particular release doesn’t have too much in the way of user-facing changes and focuses mostly on under-the-hood improvments. Here are a few changes spotted in the Android P Developer Preview 3:

Before getting into the complicated stuff, let’s start with some emojis. The release includes support for Unicode/Emoji 11.0—which was technically only officially released yesterday. Some of the newly introduced Emojis are gender-inclusive, for example emoji like Couple With Heart can specify the genders which appear in each heart. It also includes the 157 new emoji from the Emoji 11.0 standard. That list features such considerations as Lobster, Mango, Llama, Cold Face, Hot Face, Ball of Yarn, Mooncake, Superhero, Face with Three Hearts, and Bagel with Cream Cheese, as well as a whole variety of red-headed emoji modifiers. A few emojis got a few tweaks here and there, but that’s about it.