The CES 2012, being held at Las Vegas, is now officially over. The event, as usual, saw the entry of thousands of new products by different companies. The exhibition was held from Jan. 10 to Jan. 13, and of all the major announcements, one of the most important came from Microsoft who released an official statement saying that the CES 2012 would be their last appearance at the event.

However, here is a roundup of the major unveilings that happened this year.

Sony became one of the major names at the event who made new announcements about the upcoming smartphones in the Xperia lineup. The company announced two new smartphones – Xperia S and Xperia ion. The ion is set to be an exclusive AT&T device and the first Xperia smartphone with LTE-capability. While the Xperia ion has a 4.6-inch HD Reality display, the Xperia S sports a 4.3-inch display with same resolution. Both smartphones are powered by the Qualcomm MSM8260 Snapdragon (a 1.5GHz dual-core Scorpion processor, Adreno 220 GPU and 1GB RAM) and a 12 megapixel Exmor R camera sensor with video recording at 1080p.

Samsung was the other smartphone giant who came up with a number of devices for Verizon, At&T and Sprint. While AT&T got the Galaxy Note LTE, Skyrocket HD and Exhilarate, Sprint and Verizon got the Galaxy Nexus LTE and Galaxy Tab 7.7 LTE, respectively.

Nokia, at this year’s CES, introduced the Lumia 900 which is much more advanced than the previous Lumia models. The 4.3-inch ClearBlack AMOLED display device is Nokia’s first LTE-capable smartphone. The device also sports an 8 megapixel camera and will arrive with as many as 20 Electronic Arts games that are exclusive for the device.

Motorola unveiled the Android 2.3.5 (Gingerbread)-based 4.3-inch DROID RAZR MAXX that will be powered by a dual-core 1.2 GHz Cortex-A9 processor and will sport an 8 megapixel, 3264x2448 pixels, autofocus, LED flash rear camera, and a massive 3300 mAh battery, and the QWERTY Droid 4.

China-based Huawei became the surprise package of the event by introducing two new Android 4.0 or Ice Cream Sandwich-based smartphones – the Huawei Ascend P1 and Ascend P1 S. Both the devices are expected to make it big in the smartphone market in the upcoming months.

While LG came up with the LG Viper and the LG Spectrum, HTC announced its Windows Phone 7 Mango-based HTC Titan II for AT&T sporting a massive 16 megapixel camera.

As far as the number game is concerned, the CES 2012 witnessed more than 2,500 companies using up nearly 172,000 net square meters of showroom floor and over 20,000 new products exhibited.