New
#1
They seem to be dragging it out a bit, especially as they own the companies that make both the OS and 95% of the phones it runs on. When the Lumia Twitter account said in November 2014 that they "plan to upgrade all Windows Phone 8 devices to Windows 10 in the future", many took that to mean that meant Windows 10 Mobile was imminent and would launch not long after Windows 10 Desktop. Now they're saying that Windows 10 Mobile won't be released until 2016 sometime. And if mobile carriers are like they have been with previous Windows Mobile updates, then who knows when people will eventually actually get it.
It's a bit of a bummer for all the people who receive Windows Phones for Christmas won't be able to just turn it on and update to Windows 10.