The PlayStation 4

Main processor

Single-chip custom processor
CPU: low power x86-64 AMD "Jaguar", 8 cores
GPU: 1.84 TFLOPS, AMD RadeonTM Graphics Core Next engine

Memory

GDDR5 8GB

Optical Drive (Read Only)

BD 6xCAV
DVD 8xCAV

I/O

Super-Speed USB (USB 3.0), AUX

Communication

Ethernet (10BASE-T, 100BASE-TX, 1000BASE-T)
IEEE 802.11 b/g/n
Bluetooth® 2.1 (EDR)

AV Output

HDMI
Digital Output (optical)

"PlayGo"
Compatible "PlayGo" games will allow the PS4 to download an initial portion of the game, so you can start playing ASAP while the rest is downloaded in the background during actual gameplay.

Remote Play with PSP Vita
Pretty much as it says. Much like the WiiU controller/tablet, the PS Vita allows you to seamlessly play a range of PS4 titles on the Vita's 5-inch display over Wi-Fi access points in a local area network.

"SHARE Button"
The SHARE button on the Dual Shock 4 allows you to record and share your gameplay videos and pictures. You can also stream your live gameplay to Ustream or record, edit and upload videos.

Region Free
Buy games from anywhere in the world. Play them on your system. No problems.

Supports Used Games
No explanation necessary. Trade games. Sell them. Lend them to a friend. It's easy:


No "Always Online" Requirement
No requirement to check-in for authentication.

PS Plus
Continued support for Sony's well regarded PlayStation Plus service. Discounted games. Monthly FREE games. Early access to new demo's. Online play. Cross-game chat and so forth.

And more! (like the Gaikai Cloud-Based Service in the future)

Ergonomics:

As you will see immediately, there has been a change to the Dual Shock design that has persisted since the original PlayStation days.

Perhaps the first thing I noticed was the change (back) to longer handles, and indented analog/thumb sticks. In fact the design has seemingly moved back to something very similar the first analog controller that Sony released:

Being the owner of one of those 'dual analog' controllers myself, I can definitely say that the longer handles are much more comfortable than the dual shock controller that has persisted until the present day, PS3 Dual Shock. And as anyone who's ever played with a XBox controller will attest, the concave thumb sticks that have been reintroduced are much more preferable to the convex alternative.

The L2 and R2 buttons have also been modified from the previous versions: They too are now concave to help prevent your fingers from slipping or sliding off.


Functionality:

CHARGE WHEN THE SYSTEM IS POWERED OFF! - This is a major quality of life change that many Sony fans will be giddy for. The trickle charge system introduced for the PS3 was great... The downside? The system had to be powered on for the controller to charge. Now your controller doesn't need batteries AND you don't have to leave your system on to charge it. Brilliant.

SHARE Button - Previously explained.

Built in Mono Speaker and Headset Jack - Self Explanatory.

Touch Pad - Added to the front of the controller, the Pad will allow you to touch, draw, or gesture for extra functionality or interaction with your screen. Smart developers will be able to use this for a lot of things, at the very least, as another set of buttons.

Light bar - Functions much like the PS Move controller from PS3:


Personalise your colours

inFAMOUS Second Son


Killzone: Shadow Fall


Knack


The Order: 1886


DRIVECLUB


Plus many more to come from Sony's studio heavy-weights like Naughty Dog.

Metal Gear Solid 5 (FUUUCK YEAH!!!)


The Division (biggest surprise of the show?)


Final Fantasy XV


Destiny


And many, many more.

BF4
COD: Ghosts
DC Universe Online
DriveClub
FIFA 14
Killzone: Shadow Fall
Knack
LEGO Marvel Super Heroes
Madden 25
NBA 2k14
NBA Live 14
Planetside 2
Skylanders
Warframe
Watch Dogs