Tablets and ultrabooks are not the only devices Samsung is unveiling at IFA 2012. The company also showed off its first Windows Phone 8 smartphone, the ATIV S.

Featuring a brushed aluminum chassis, the ATIV S is 8.7mm thin and weights 135 grams (just under 0.3 pounds). It is approximately 5.4” tall and 2.8” wide at 137.2mm x 70.5mm. The front of the smartphone features a large 4.8” HD Super AMOLED touchscreen display covered with Corning Gorilla Glass 2. Below the display is a slightly raised physical Windows button along with capacitive back and search buttons on either side. Above the display is a 1.9MP webcam and aluminum speaker grill. On the rear of the ATIV S is an 8MP autofocus camera, rear aluminum speaker bar, and a compartment that holds a 2300 mAh battery.

Inside the smartphone running Windows Phone 8 is a 1.5 GHz dual core ARM SoC, 1GB of RAM, and 16 or 32 GB of storage. The ATIV S also includes a microSD card slot. According to the Windows Team Blog, the ATIV S is noticeably thinner than Samsung’s other Windows Phone (7) smartphones. On the other hand, the phone is wider and taller, so it is less pocket-able. Thanks to the slightly curved edges of the phone, it is easy to hold and use with one hand despite the larger form factor (I’m sure Josh is making a joke for the podcast as we speak).

Overall, it looks like Samsung has put a lot of work into its new ATIV S Windows Phone 8 smartphone. While I’ve been intrigued with the Windows Phone mobile OS for a while now, I have not found a phone running it that I like; Nokia is great and all but the Nokia 920’s design just isn’t my thing. Personally, I think the ATIV S might be the perfect replacement for my Samsung Infuse 4G. You can see more photos of the ATIV S over at the Windows Team Blog.

Read more about Windows Phone 8 at PC Perspective.