Reddit interviews Xbox Live's Major Nelson at E3 2013 and talks all about the Xbox One. A few notes from the interview:

• Xbox One servers would never be shut down says Nelson.
• If someone is banned, they don't lose access to the games they purchased.
• Microsoft says they won't change anything after the conference and they are really proud of the system and the exclusives that were announced at E3.
• Xbox 360 can be plugged into the Xbox One.