The rumors have been floating around the web for a few days but now it is official. Sony Japan has announced the bigger brother of the Xperia Z smartphone, the Xperia Z tablet, on its Japanese website. The new device has a lot in common with its smartphone equivalent which was only launched a couple of weeks ago at the Consumer Electronic Show in Las Vegas.

At only 495 grams the tablet is pretty lightweight. Like the smartphone it's also rather sleek looking and only 6.9mm thin which makes it the thinnest of its kind. Despite the sleekness it is water- and dustproof and comes with a high-end specification.

The Xperia Z features a 1.5GHz quad-core processor, Android 4.1 OS, LTE connectivity and NFC technology for easy sharing with other Sony devices. The screen is of the WUXGA variant (1920 x 1200 pixels) and is 10.1 inches large.

WIth a 8.1 million pixel back-illuminated pixel "Exmor R for mobile" CMOS sensor the camera specification sounds top-notch for a tablet and should provide decent low-light performance.

The Xperia Z tablet will be available in black or white in the Japanese market sometime this spring, there is no word about availability in other regions yet. We'll keep you updated.