The Surface 3 (4G LTE) almost shares the same features and specs as the Surface 3 Wi-Fi only edition, including 10.8-inch Full HD Plus (1920 x 1280) display, Intel Atom Quad Core processor clocked at 1.6GHz with Intel Burst technology up to 2.4GHz and 2MB Cache, 64GB storage and 2GB RAM or 128GB storage and 4GB RAM, Windows 8.1 (free upgrade to Windows 10). However, the this model also comes with 4G LTE connectivity, allowing users to "to stay connected wherever you roam".
The Surface 3 (4G LTE) will be available staring today through the company's stores, authorized resellers and partner retailers, as well as AT&T stores, while T-Mobile will get it starting July 31. Unfortunately there is no word yet on pricing.
Surface