Yesterday it was reported that PlayStation 4 would support 8 player chat functionality. Today, it was announced that Xbox One would also support the ability to allow 8 players to chat across the platform.
When GameInformer reached out to Microsoft to ask if they supported a similar feature as the PS4, a Microsoft spokesperson stated, “At launch, up to eight people will be able to join a Party Chat at a time on Xbox One." The 360 currently offers this feature so it's no surprise that it will be available on the One.
The Xbox One launches on November 22nd in the States.