According to a press release, the update will start rolling out to Xbox Insiders today and will be made available for everyone else in the coming weeks.
Announcing the feature, Xbox wrote: “Today’s update enables a highly requested feature – Discord Voice on Xbox consoles allows you to talk with your friends and community while you play your favourite games. Planning a few rounds of multiplayer action in Halo Infinite with buddies on both console and PC? Exploring new biomes with your friends in Minecraft? See them already playing a game that supports cross-play? Connect to their voice channel and chat as you all play.”
— Nibel (@Nibellion) July 20, 2022
“While you are playing on your console, you will be able to see who is on the call and speaking. You’ll also be able to adjust the sound, and switch between Discord Voice and Xbox game chat.“
The Xbox Insider Program is free to join and “allows passionate Xbox fans the opportunity to give us feedback on the latest Xbox system updates, as well as features and games still in development,” explains the FAQ section of the Insider website.
“As an Xbox Insider, you’ll decide your level of involvement and what content to pursue – whether it’s on PC or Xbox or focused on system updates or games. You’ll automatically become eligible to join more Insider content previews based on your interests, tenure as an Xbox Insider, Xbox Insider XP score, and activities you participate in.”