Microsoft's Surface Pro 3 tablet has now gone on sale but so far, only the Intel i5 version is available in the U.S.

The Microsoft Surface Pro 3 with Intel i5 is available in two different options of either 128 GB or 256 GB, which costs $999 and $1299 respectively.

According to Panos Panay, corporate vice president for Surface Computing at Microsoft, all new devices were available and confirmed that other versions will hit the shelves from the start of August.

"Those who are interested in the Core i3 and Core i7 versions will remember that when we first announced the product we said these would be shipping 'in August'," he claimed.

"Thanks to some great work by our team, I can confirm that, in this case, 'in August' means August 1, which is when these versions will arrive in stores and at commercial resellers in Canada and the U.S."

Panay further confirmed that all the Microsoft Surface models with Intel i5, i3 and i7 processors will be available in major markets by the end of August, which includes Australia, UK, France, Germany and China.

Panay also added the new Docking Station for the Microsoft Surface Pro 3 is already on its way. It must be noted that it will not arrive until Aug. 15 in Canada and the U.S. but it is available for pre-order.

Meanwhile, the tech giant touted the Microsoft Surface Pro 3 as the ideal tool for businesses that do not want to compromise between tablets and laptops, or have both. Coca-Cola is one of the early adopters of such.

Microsoft Surface Pro 3 Specs & Features

Screen size: 12 inches
Resolution: 2160 x 1440
Dimensions: 11.5" x 7.93" x 0.36"
Battery Life: Up to 9 hours of web browsing4
Processor: 4th generation Intel® CoreTM i3, i5 or i7

The Microsoft Surface Pro 3 inherits all of its predecessor's features, such as the headphone, microSD card reader, USB 3 port and Mini DisplayPort jacks. It also features a continuous customised kickstand, which can take 0 to 150 degrees angle, labelled as better "lapability."

The Microsoft Surface Pro 3 also comes with Dolby front-facing speakers, which is 48 per cent louder than its predecessor and a more natural stylus.