Xbox One and Xbox 360 users won’t be able to engage in cross-chat chat sessions. Instead, Xbox owners divided by the two platforms will be able to communicate by digital smoke signals, better known as text messages.
This information comes from Microsoft’s Marc Whitten, who confirmed this info during an interview with IGN. The Xbox VP cited technical hangups, including sound quality issues that currently prevent voice chat between the two consoles. Friends will be able to see each other online, but as of now Xbox One and Xbox 360 party chats won’t be an option.