Some very good info to clarify some rumors and/or hate for the new Xbox One. It is a good read I suggest checking it out.
Xbox One Twitch
Microsoft says that Twitch is to be built into the Xbox One. It allows other gamers to view live streamed play but with a twist. They can comment in real time on a social feed, while the audio of the player is taken and played over the top too. We can see this as being a great way for friends to help each other play through sections of games that one or more find difficult.
Will my Microsoft Points still work?
No. As previously revealed, Microsoft is to ditch Microsoft Points in favour of local currency. Rather than having to work out a convoluted exchange rate in your head, you will be able to pay in pounds and pence in the UK. Microsoft Points that you've earned through Xbox Live Rewards will remain in your Xbox account and will transition to your local currency with the rest of your Microsoft Points. Prior to the transition, all your earned Pending Points will be deposited into your account.
Does Xbox One require an "always on" internet connection?
No, it does not have to be always connected, but Xbox One does require a connection to the internet. Microsoft says it has designed the Xbox One to be "your all-in-one entertainment system that is connected to the cloud and always ready". It is a designed so you can play games and watch Blu-ray movies and live TV if you lose your net connection.
You won't need to be always connected, but you will need to have an internet connection. That's the basic bottom line of the connectivity requirements of the new console.
Microsoft say that for an optimal experience, it recommends a broadband connection of 1.5Mbps and that 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.
It also notes that 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," says Microsoft.
Does the Xbox One let me play used games?
When it comes to trade-in games you can, don't panic, resell your disc-based games, but it isn't as simple as you've previously known it. Shifting the focus away from itself, Microsoft is letting game publishers enable certain rules. You to trade in your games at participating retailers, but they might restrict what you can do, and how much it costs. EA has already run a scheme like this that forced you to buy an online code to play a second-hand game, however it scraped that scheme earlier in the year.
Furthermore you will be able to give your games to friends. According to Microsoft the Xbox One is "designed so game publishers can enable you to give your disc-based games to your friends." What it means by that is that there are no fees charged as part of these transfers, but 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.
Is every game installed on the console?
After signing in and installing your new game, you can play any Xbox One game from any Xbox One because a digital copy of your game is stored on your console and in the cloud. For example, while you are logged in at your friend’s house, you can play your games, rather than worrying about whether or not you've remembered the disc.
Can I use my current Gamertag on Xbox One and will my Gamerscore and Achievements transfer?
Yes. Your current Xbox Live Gamertag will stay with you on Xbox One if you choose to keep it, and your hard-earned Gamerscore and Achievements will carry over from Xbox 360.
Is there anything different about Xbox One Achievements?
Yes. There are now two types of Achievements: achievements and challenges. An achievement is the same as on the Xbox 360. There’s a goal or activity you must accomplish and a reward that you receive upon completion. You can unlock an achievement at any time, be it on a game’s launch day or 3 years later.
A challenge, on the other hand, is more like an opportunity that you need to grab while you can. It is also comprised of a goal and a reward; however, challenges are time-bound (as in, real life time). That means you can only unlock during its eligible time window, and if you get close but don’t complete the goal when it ends, then tough luck says Microsoft.
Will Xbox One be backward compatible with my existing games?
No. The Xbox One hardware is not compatible with Xbox 360 games.
Will the XBox One support 4K gaming and movies?
Yes. Microsoft has confirmed the Xbox One will support 4K resolution and 3D.
Link to full page:
Everything to know about Xbox One (Currently)