Full specs:

Prices start: $1499

Display:

• Retina display: 15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 resolution at 220 pixels per inch with support for millions of colors
• Supported resolutions: 2880 by 1800 pixels (Retina); scaled resolutions: 1920 by 1200, 1680 by 1050, 1280 by 800, and 1024 by 640 pixels

Processor:

• 2.3GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.3GHz) with 6MB shared L3 cache
• 2.6GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.6GHz) with 6MB shared L3 cache
• Configurable to 2.7GHz quad-core Intel Core i7 (Turbo Boost up to 3.7GHz).

Memory:

• 8GB of 1600MHz DDR3L onboard memory
• Configurable to 16GB.

Storage:

• 256GB Flash or
• 512GB Flash…configurable up to 768GB

Size and Weight:

• Height: 0.71 inch (1.8 cm)
• Width: 14.13 inches (35.89 cm)
• Depth: 9.73 inches (24.71 cm)
• Weight: 4.46 pounds (2.02 kg)

Graphics and Video Support:

• Intel HD Graphics 4000
• NVIDIA GeForce GT 650M with 1GB of GDDR5 memory and automatic graphics switching
• Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on up to two external displays, at millions of colors
• Thunderbolt digital video output
• Native Mini DisplayPort output
• DVI output using Mini DisplayPort to DVI Adapter (sold separately)
• VGA output using Mini DisplayPort to VGA Adapter (sold separately)
• Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately)

Camera:

• 720p FaceTime HD camera

Connections and Expansion:

• MagSafe 2 power port
• Two Thunderbolt ports (up to 10 Gbps)
• Two USB 3 ports (up to 5 Gbps)
• HDMI port
• Headphone port
• SDXC card slot
• Apple Thunderbolt to Gigabit Ethernet Adapter (sold separately)
• Apple Thunderbolt to FireWire Adapter (sold separately, available July)

Wireless:

• 802.11n Wi-Fi wireless networking;3 IEEE 802.11a/b/g compatible
• Bluetooth 4.0 wireless technology

Audio:

• Stereo speakers
• Dual microphones
• Headphone port
• Support for Apple iPhone headset with remote and microphone
• Support for audio line out

Keyboard and Trackpad:

• Full-size backlit keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys and 4 arrow keys (inverted “T” arrangement) with ambient light sensor
• Multi-Touch trackpad for precise cursor control; supports inertial scrolling, pinch, rotate, swipe, three-finger swipe, four-finger swipe, tap, double-tap, and drag capabilities

Battery and Power:

• Up to 7 hours wireless web
• Up to 30 days standby time
• Built-in 95-watt-hour lithium-polymer battery
• 85W MagSafe 2 Power Adapter with cable management system; MagSafe 2 power port

Included Software:

• OS X Lion
• Includes Mail, Address Book, iCal, the Mac App Store, iTunes, Safari, Time Machine, FaceTime, Photo Booth, Mission Control, Launchpad, AirDrop, Resume, Auto Save, Versions, Quick Look, Spotlight, QuickTime, and more.
• Mountain Lion coming soon!

-Source:  Apple