Xbox One is not backward compatible

Because of different architecture.

Xbox One requires "purchasing the right to play" pre-owned games

Part of the internet required thing of the Xbox One is that there is an activation code with games and have to register the code with an Xbox Live account.

Phil Harrison from Microsoft then went on to say:
"The bits that are on that disc, you can give it to your friend and they can install it on an Xbox One, they would then have to purchase the right to play that game through Xbox Live."

So there is the answer to the rumor that the Xbox One won't play used games and the answer is yes, it will BUT will have to pay to play them (beyond obtaining the disc).

PlayStation Store Update 5/21/13 North America

Pre-Order

Remember Me ($59.99)

Remember Me is a 3rd person action adventure where players take on the role of Nilin, a former elite memory hunter with the ability to break into people’s minds and steal or even alter their memories.

PS3 Full Game

Resident Evil Revelations ($49.99)

The story is set at a time before the Kijuju and Lanshiang bioterror incidents when the BSAA was still a young organization. Join Jill Valentine aboard a ghost ship in the Mediterranean Sea searching for her old partner, Chris Redfield. Learn the hidden truth behind the destruction of a floating city. Or play in Raid Mode for a co-op killing-spree with friends over the Internet.

Fast & Furious: Showdown ($39.99)

BECOME A PART OF THE CREW! Strap in and get ready for an intense ride as you team up to take down a dangerous international gang that can only be stopped by you and the rest of the Fast & Furious crew.

Dynasty Warriors: Strikeforce ($19.99)

Step into a Dynasty Warriors experience unlike any other. Up to four friends can team‐up for a wide range of heroic action‐packed quests. Become one of history’s greatest warriors and work as a team to conquer heavily‐armed fortresses, infiltrate enemy strongholds and more. Spectacular battles await!

Mugen Souls ($39.99)

Take the reins as Chou-Chou, the self-proclaimed undisputed god, and conquer the seven worlds! Turn your allies, enemies, crystals, and even entire continents into your loyal peons in this overwhelmingly over-the-top RPG!

Ultimate Editions

Assassin’s Creed III Ultimate Edition ($55.99)

The Assassin’s Creed III Ultimate Edition includes the full Assassin’s Creed III game and all released downloadable content, including Benedict Arnold, Hidden Secrets Pack, Battle Hardened Pack and the Tyranny of King Washington trilogy.

Batman Arkham City Ultimate Edition ($28.99)

Batman: Arkham City Ultimate Bundle includes: Batman: Arkham City game, Batman Inc. Batsuit Skin, Catwoman Pack, Challenge Map Pack, Harley Quinn’s Revenge, Arkham Bundle, Nightwing Bundle Pack, Robin Bundle Pack, Arkham City Skins Pack.

Call of Duty: Modern Warfare 3 Ultimate Edition ($69.99)

Download and experience Call of Duty: Modern Warfare 3 Ultimate Edition from the exciting Shooters genre.

DC Universe Online Ultimate Edition ($29.99)

Jump in to DC Universe Online with everything you need to get started on your Heroic or Villainous adventures! Purchase includes the full game, four DLC Packs that include additional super powers, weapons and high level missions, and two Legends PvP characters – Future Batman and Future Harley Quinn!

DmC Ultimate Edition ($52.49)

This bundle includes the full DmC: Devil May Cry game & all add-on content: Vergil’s Downfall, Weapons Bundle Pack, Costumes Pack & Bloody Palace Mode.

Far Cry 3 Ultimate Edition ($55.99)

Journey into the heart of insanity. Far off the charts lies an island unlike any other. A place where heavily armed warlords traffic in slaves. Where outsiders are hunted for ransom. As you embark on a desperate quest to rescue your friends, you realize that the only way to escape this darkness… is to embrace it. This Ultimate Edition also includes all bonus DLC content: Monkey Business Pack, Lost Expeditions, Warrior Pack, and Predator Pack.

Max Payne 3 Ultimate Edition ($29.99)

Purchase the Max Payne 3 Ultimate Edition and get the original game plus the Rockstar Pass at a discounted price. The Rockstar Pass gives you access to all add-on content packs. No longer a New York City cop, Max Payne moves to São Paulo to protect a wealthy family in an effort to finally escape his troubled past. Max Payne 3 combines cutting edge gunplay with a dark, twisted story for a seamless, cinematic experience.

Metal Gear Rising: Revengeance Ultimate Edition ($63.99)

For a limited time, download the complete METAL GEAR RISING: Revengeance experience with this “Ultimate Edition”, complete with the full game, and 8 pieces of DLC featuring 2 full side-story missions, All-New VR Missions pack and 5 skins, including the popular Cyborg Ninja Skin. Buy it now!

Persona 4 Arena Ultimate Edition ($39.99)

Jump into the next chapter of the story as Persona 4 enters a new genre in this 2D fighting game from the dream team of ATLUS and Arc System Works, made to be enjoyed by fighting game beginners and experts alike! The Ultimate Edition comes with the Persona 4 Arena game, Full Navigation DLC, Glasses Full Pack, Additional Colors Full Pack, and Challenge No. 30 Demonstration.

Starhawk Ultimate Edition ($23.49)

Get all Starhawk add-on content and the full game including the multiplayer and single-player campaign.

Transformers: Fall of Cybertron Ultimate Edition ($62.99)

Download and experience TRANSFORMERS: Fall of Cybertron Ultimate Edition from the exciting Action genre.

PSN

Ratchet: Deadlocked ($9.99)

Introduces a new mission structure approach, where players are rewarded with a constant progression of items such as weapons, armor, and health. Squad based gameplay allows players to demolish the competition by commandeering your allied bots through critical and strategic battles. Enhanced online gameplay, featuring five modes of play and 12 levels. Modes include Conquest, Deathmatch, King of the Hill and more.

Call of Juarez: Gunslinger ($14.99)

Live the epic and violent journey of a ruthless bounty hunter onto the trail of the West’s most notorious outlaws. Blurring the lines between man and myth, this adventure made of memorable encounters unveils the untold truth behind some of the greatest legends of the Old West.

 

Xbox One doesn't require an always on internet connection

Here is the quote by Phil Harrison from Microsoft:

“There are many devices in your life that require the Internet to function. Xbox One is no different in that it requires, at some point in the beginning and at various times through its on state, to connect to our cloud and to our Internet. That is to deliver Xbox Live functionality, that is to deliver download content to you, that is to deliver some of the innovations around TV and entertainment that we showed today. But it doesn’t require it to be online all the time.”

“For single-player games that don’t require connectivity to Xbox Live, you should be able to play those without interruption should your Internet connection go down. Blu-ray movies and other downloaded entertainment should be accessible when your Internet connection may be interrupted. But the device is fundamentally designed to be expanded and extended by the Internet as many devices are today.”

Famitsu Review Scores 5/22/13

Norn9: Norn + Nonette (PSP) – 9/9/8/9
Dodonpachi Saidaioujou (360) – 9/8/8/8
Haiyore! Nyaruko-San: Nafushigatai Game no You na Mono (PSV) – 7/8/7/7
Shooting Love. 10-Shuunen: XIIZeal & DeltaZeal (360) – 7/7/6/6
Jansei Utahime Chrono * Star (PSP) – 6/7/6/6

Some Xbox One Hardware Specs

- 8 Core 1.6 GHZ CPU
- 8 GB RAM
- Blu-ray drive
- 500 GB hard drive
- USB 3.0
- 64-bit architecture
- Various power states
- Built-in Wi-Fi

Xbox One image