So it seems MS has confirmed that the One will need to connect online at least once every 24 hours to play either Online or Offline.
http://news.xbox.com/2013/06/connected
http://kotaku.com/xbox-one-needs-to-connect-to-the-internet-every-24-hour-511751949
"While a persistent connection is not required, Xbox One is designed to verify if system, application or game updates are needed and to see if you have acquired new games, or resold, traded in, or given your game to a friend. Games that are designed to take advantage of the cloud may require a connection.
With Xbox One you can game offline for up to 24 hours on your primary console, or one hour if you are logged on to a separate console accessing your library. Offline gaming is not possible after these prescribed times until you re-establish a connection, but you can still watch live TV and enjoy Blu-ray and DVD movies."
Edit:
Also confirm game borrinwg policy:
"Give your games to friends: Xbox One is designed so game publishers can enable you to give your disc-based games to your friends. There are no fees charged as part of these transfers. There are two requirements: you can only give them to people who have been on your friends list for at least 30 days and each game can only be given once."
So yes you can borrow a game to a friend, but each game can only be borrowed once, and only if the person has been on your Friends list for 30 days.
http://news.xbox.com/2013/06/license
Edit 2:
Used games are allowed.. as long as the publisher allows it:
"Trade-in and resell your disc-based games: Today, some gamers choose to sell their old disc-based games back for cash and credit. We designed Xbox One so game publishers can enable you to trade in your games at participating retailers. Microsoft does not charge a platform fee to retailers, publishers, or consumers for enabling transfer of these games."
http://news.xbox.com/2013/06/license
http://news.xbox.com/2013/06/connected
http://kotaku.com/xbox-one-needs-to-connect-to-the-internet-every-24-hour-511751949
"While a persistent connection is not required, Xbox One is designed to verify if system, application or game updates are needed and to see if you have acquired new games, or resold, traded in, or given your game to a friend. Games that are designed to take advantage of the cloud may require a connection.
With Xbox One you can game offline for up to 24 hours on your primary console, or one hour if you are logged on to a separate console accessing your library. Offline gaming is not possible after these prescribed times until you re-establish a connection, but you can still watch live TV and enjoy Blu-ray and DVD movies."
Edit:
Also confirm game borrinwg policy:
"Give your games to friends: Xbox One is designed so game publishers can enable you to give your disc-based games to your friends. There are no fees charged as part of these transfers. There are two requirements: you can only give them to people who have been on your friends list for at least 30 days and each game can only be given once."
So yes you can borrow a game to a friend, but each game can only be borrowed once, and only if the person has been on your Friends list for 30 days.
http://news.xbox.com/2013/06/license
Edit 2:
Used games are allowed.. as long as the publisher allows it:
"Trade-in and resell your disc-based games: Today, some gamers choose to sell their old disc-based games back for cash and credit. We designed Xbox One so game publishers can enable you to trade in your games at participating retailers. Microsoft does not charge a platform fee to retailers, publishers, or consumers for enabling transfer of these games."
http://news.xbox.com/2013/06/license