Microsoft is sending invitations for an event in October that will showcase new devices, and a Surface Pro 4 tablet optimised for Windows 10 is expected to feature among those being unveiled.
Speculation has been mounting for some time that Microsoft is readying a new model of the tablet, as the Surface Pro 3 is now over a year old and the firm has since released Windows 10, a new version of the operating system intended to better meld the desktop and mobile worlds.
Microsoft has now sent out an invite to an event on 6 October in New York, promising "exciting news about Windows 10 devices".
The firm has given no indication about what these devices are, but rumours point to the Surface Pro 4, an updated version of the Microsoft Band fitness tracker and new Lumia smartphones, according to veteran Microsoft watcher Mary Jo Foley writing on the All About Microsoft blog.
According to Foley, the inside information on the Surface Pro 4 is that it will be a faster, thinner and lighter update to the Surface Pro 3, keeping to the same overall form factor but with a thinner bezel to make the 12in screen appear larger.
It is also expected to be based on the recently introduced Intel Skylake family of 6th generation Core processors, and to ship with Windows 10 preinstalled.
The news follows last week's disclosure that Dell is to sell and support the Surface Pro to business customers via the Surface Enterprise Initiative.
Microsoft's new smartphones are hotly tipped to be the Lumia 950 and Lumia 950 XL, which are rumoured to have 5.2in and 5.7in displays respectively, both with a resolution of 2560x1440 pixels. Both are also expected to have Qualcomm Snapdragon processors with 3GB memory and 32GB of internal flash storage with a micro SD slot for expansion.
The big question regarding the new Lumia devices is whether they will be the first to ship with Windows 10 Mobile, the smartphone version of Microsoft's new platform, which is slated for an autumn release.
However, Microsoft has just pushed out a new test version of the software and appears to still be working on fixing bugs.
Little is apparently known about the updated Band device, expected to be unveiled as the Microsoft Band 2.
The likely unveiling will follow on from Apple's unveiling of its iPad Pro device, a 12.9in tablet that can be used with a stylus and keyboard and is aimed at the business market, which will pose a challenge to Microsoft's Surface range.
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