Main Features for Android:

• Gather your fireteam: With Looking for Group, you can search for teammates with similar gaming objectives, playstyles and preferences across Xbox One and Windows 10 PC games.
• Welcome to the Club: Create your own gaming communities with Clubs on Xbox Live. With dedicated groups organised around similar interests, playstyles and objectives, it's easier than ever to stay connected with like-minded gamers.

Main Features for PC

• In-home streaming: Play Xbox One games in more places at home on a Windows 10 desktop, laptop or tablet. With an Xbox controller and a laptop your Xbox game collection follows you from screen to screen, so you can play Halo in your bedroom, kitchen or as far as your Wi-Fi will go.
• Party chat: Join a party chat with your friends while playing the same or even a different game. And invite or join friends in multiplayer games – whether they’re on a Windows 10 PC or an Xbox One.
• Gaming history: View all your memorable Windows 10 and Xbox One gaming moments in one place. Check out your achievements by game, game clips and screenshots you’ve captured, and all the Gamerscore you’ve earned across all your Windows 10 devices.
• Messenger: Continue the conversation or start new ones by messaging your Xbox community across iOS, Android and any Windows 10 tablet or PC. Engage with friends to discuss the latest gaming topics, get gaming tips, or join forces for epic gaming adventures all from the Xbox Console Companion App.
• Remote Control: The Xbox Console Companion App makes it easy to navigate and control your Xbox One. With simple touch and swipe, the app lets you browse the web on your TV, and access media controls to pause, fast-forward or rewind your favourite films and TV programmes.

More:

• Xbox Game Pass is now available on PC. The service costs of Xbox Game Pass for PC beta is $1 per month.