[Update: Official for March 4th] Sony Tablet P Headed to AT&T March 3rd for $400?

AT&T could be set to offer the Sony Tablet P very soon if recent rumors are to be believed. The T3ch Boys have supposedly gotten hands on an internal document from Ma Bell stating that the Sony Tablet P will be launching on their network March 3rd for $399.99. The 3rd of March is a Saturday, inconsistent with AT&T’s favorite launch day of Sunday.

The 1GHz Tegra 2 device is far from new, but it’s still one of the more interesting tablets we’ve seen. It’s a clamshell device that has two 5.5 inch displays, making up an 11 inch tablet (sort of) when it’s unfolded. It won’t be running on AT&T’s LTE network apparently, but HSPA+ support will be baked in. It also appears that you can get the device for $299.99 if you buy it alongside the $.99 Xperia Play. Worth it? We’ll let you decide. [via The Verge]

[Update]: Looks like things have already been made official. And as I suspected, it will launch on the 4th of March, not the 3rd. The price remains at $400. Read on for full press details. [Thanks Korey!]

Sony Tablet™ P Available on AT&T 4G Network

Unique Tablet Design Features Two 5.5 Inch Screens, Easily Fits into a Pocket or Purse

DALLAS, Feb. 28, 2012 /PRNewswire/ — AT&T* today announced Sony Tablet™ P, a dual screen, multi-functional tablet ideal for mobile communication and entertainment, will be available beginning March 4. The 4G tablet will be sold for $399.99 with a two-year service agreement in more than 1,000 AT&T company-owned retail stores and online at www.att.com.

The new Sony Tablet P pushes the design of a tablet even further by elevating the user experience to entirely new levels. The unprecedented dual-screen layout of Sony Tablet™ P allows its two 5.5-inch displays to be used for different functions such as playing video on one screen while using the other as a controller, or checking email on one screen while using the other as a keyboard. Customers can also combine the displays into a single large screen and its unique folding design means it can fit easily into a pocket or purse.

At launch, users will be able to download apps optimized for the dual screens of Sony Tablet P via Sony’s “Select App,” including games, entertainment and lifestyle applications. In addition to optimized apps, Sony Tablet P users will have access to the full suite of Android applications via Android Market. Like its predecessor, Sony Tablet P is PlayStation™ Certified and provides access to the full suite of Sony Network Entertainment services. Sony Tablet devices are distinguished by four key features that set them apart from any other tablets on the market. These include: uniquely designed hardware and software, a “swift and smooth” experience (which includes Sony original features, Quick view and Quick touch), network entertainment services and cross-device connectivity.

Running on Android 3.2, Sony Tablet™ P is 4G**capable and Wi-Fi compatible. With a qualifying data plan, users of Sony Tablet™ P also have access to AT&T’s mobile broadband network and unlimited access to AT&T’s nearly 30,000 hot spots nationwide. With both 4G and Wi-Fi, customers can browse the Internet, access digital content including videos, games, and check e-mail, while on the go, nearly anytime.

Data Plans
Customers who sign a two-year service agreement have two postpaid data plan options to choose from, including:
AT&T DataConnect 3GB: $35 for 3GB
AT&T DataConnect 5GB: $50 for 5GB

Customers may still choose from the existing monthly billing options, or prepaid options, with no long-term commitment. The Sony Tablet P without a long term contract will cost $549.99.
The prepaid plan options include:
AT&T DataConnect 250MB: $14.99 for 250MB
AT&T DataConnect 3GB: $30 for 3GB
AT&T DataConnect 5GB: $50 for 5GB

Specifications
Display
Resolution: 1024 x 480 (each screen)
Screen Size: 5.5″ (x 2 – dual screens)
Hardware
Camera: Front – 0.3 Megapixel Rear – 5 Megapixel
Inputs and Outputs
Headphone Output: 1
MicroUSB: 1
Memory
Internal Memory: 1GB
Power
Battery Life (Approx): Up to 7 hours (based on general usage)
Battery Type: Li-Ion
Processor
Processor Type: NVIDIA® Tegra™2 mobile processor, dual-core 1GHz
Software
Operating System: Android 3.2
Storage
External storage: microSD card slot (expandable up to 32GB, 2GB microSD card included)
Internal Storage Capacity: 4GB
Weights and Measurements
Dimensions (Approx.): Open – 6.23l x 7.09w x 0.56h (inches) Closed – 3.12l x 7.09w x 1.03 h (inches)
Weight (Approx.): 0.83 lbs
Wireless/Networking
Bluetooth® Technology: Bluetooth version 2.1 + EDR
Wi-Fi: IEEE802.11b/g/n