Some analysts have questioned whether new Lumia devices can do well in developing markets, where Android devices have a stronghold, followed by Apple's iPhone.

In developing markets, they can be your first or only computing devices.' 'You can run your entire business on them. The Lumia 950 and 950 XL are 'the most productive phones on the planet,' Nadella said. The Band 2 will cost $249 and will be available Oct. New features of Microsoft Band 2 include a curved display and a barometric sensor to measure altitude changes for extreme athletes. The 950 and 950XL will ship sometime in November and the 550 in December. The new Lumia 950 and Lumia 950XL start at $549 and $649, respectively, but Microsoft also announced the Lumia 550, a a more-affordable LTE smartphone priced at $139. No single device will be the hub of activity. We built Windows 10 for a new era of mobile computing. With the fastest ramp-up to Windows 10 of any prior Windows version (110 million devices running Windows 10 in just eight weeks), he said, 'more and more people are coming home to Windows … We now begin a new chapter of Windows 10 with new devices built for Windows 10. 'We're making progress toward moving people from needing, to choosing, to loving Windows,' Nadella said. With Continuum, apps and other software in Windows 10 are intended to run on all the new machines, opening up opportunities for IT, app developers and users. Yet, there was a clear message from CEO Satya Nadella and others that Windows 10 Lumia phones, which only control 3% of the smartphone market, have an important place in Microsoft's Continuum world. 26, might be the most compelling to the Microsoft faithful. Surface Book, starting at $1,499 and available Oct.

Microsoft on Tuesday jammed a range of new Windows 10 devices into a two-hour announcement - everything from three new Lumia smartphones, a Microsoft Band 2 smart wrist wearable, a new Surface Pro 4 and its first-ever laptop, the Surface Book.

Microsoft display dock.