Earlier this year Microsoft stated that their plan was to begin the roll out of Windows 10 Mobile to existing Lumia devices in December. With December being half over by this point, the fact that the update would probably be pushed to 2016 was something of an unofficial but accepted truth. Today Microsoft has made that truly official. The company said the following in a statement to ZDNet:

"This November we introduced Windows 10 to phones including brand new features such as Continuum and Universal Windows Apps with the introduction of the Lumia 950 and 950 XL. The Windows 10 Mobile upgrade will begin rolling out early next year to select existing Windows 8 and 8.1 phones."

It's not made explicitly clear why the update has been delayed, as the OS is already available on Microsoft's recently launched Lumia 950 and 950 XL. From my experience with the beta/developer releases of the OS that Microsoft has made available, it's entirely possible that they still need to work on ironing out bugs and improving performance. Many reviews of the new Lumia phones have a similar sentiment, and with many of the older Lumia devices running less capable hardware from Qualcomm's Snapdragon 400 series than the 950 and 950 XL, it wouldn't be such a bad thing to have the update delayed to ensure it doesn't cripple performance on those phones.

At this time it's also not known how many devices will receive the update to Windows 10 Mobile. Microsoft has stated that phones will need 8GB of NAND, but it's not clear if there are other hardware requirements. Given that the Lumia 550 just launched with Snapdragon 210 and runs Windows 10 Mobile, I would hope that Microsoft plans to update a significant number of existing devices.

Source: Microsoft via ZDNet

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  • haukionkannel - Friday, December 18, 2015 - link

    Well the win10 mobile is still in beta stage, so no wonder that older phones are in waiting state. MS-first need to get win10 ready to new phones, and when that is done they can tweak it so that older phones also get stable upgrade.
  • Michael Bay - Friday, December 18, 2015 - link

    Try restoring it to factory defaults before returning to 8.1.
    Helped a lot of people on the latest preview build for some reason.
  • HardwareDufus - Friday, December 18, 2015 - link

    That was my experience on every phone I've put the Win10M Insider Preview on.

    Install it.. Then do a Hard Reset... Then re-install all of your apps..

    The idea is similar to a PC where a clean install is always better than an upgrade... doing the reset makes your Win10M insider preview install a clean install.. then just put your apps back on.

    The performance is night and day... it goes from unuseable to a very nice experience... Especially after about 24 hours after things have really settled in.
  • BurntMyBacon - Tuesday, December 22, 2015 - link

    @HardwareDufus: "The performance is night and day... it goes from unuseable to a very nice experience... Especially after about 24 hours after things have really settled in."

    What exactly are they doing that improves the experience a day after you clean install it? Kinda sounds like a lot of phoning home to MS (perhaps to get advertising IDs and the likes) is going on reducing performance until it is done. Speculation to be sure, but I'm not sure I can get on board with that until I know what is going on there.
  • BurntMyBacon - Tuesday, December 22, 2015 - link

    @AkulaClass: "Terrible and hopeless app-support"

    Terrible app-support or terrible library, because I've heard the SDKs and development environment was actually pretty good. Dev's just don't want to waste time on a platform with little ROI and MS hasn't done a terribly great job at convincing them its worth their time. That said, it does look like most of the major hitters are on board now so I'll have to see if my current app list or near enough equivalents exist before I pass further judgement.
  • Michael Bay - Friday, December 18, 2015 - link

    Well, damn. I hoped to get a stable one for my 730, seeing that applications on 10 are actually better.
  • Dr_Orgo - Friday, December 18, 2015 - link

    Had an HTC 8x on Verizon for 2 years. Didn't receive the update to Windows Phone 8 before I switched to an iPhone 6. I hope Microsoft is able to keep pushing for more timely updates as it's one of the nicest features of iOS.
  • haukionkannel - Saturday, December 19, 2015 - link

    The problem is the Verizon, not MS... My old 630 has get every update so far, but I live in Europe, so we have it easier...
  • Frangelina - Sunday, December 20, 2015 - link

    Windows 10 insider preview 10.0.10586.36 runs extremely well on my lumia 928. It is fast, superb operating system. I like my phone very much. Yes I had iphones for years.
  • Michael Bay - Sunday, December 20, 2015 - link

    I`m thinking about jumping on the preview with my 730.
    Is it feature complete, does it hang up or act weirdly somewhere?

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