Microsoft has added a number of new videos to its Channel 9 site devoted to covering the new features in the Windows 10 1511 release, along with the Windows 10 Build 10586 SDK. The new version went live for all Windows 10 users in November.
"Most significant in the Version 1511 update is the release of Windows 10 Mobile for phones and small tablets. This includes the new Continuum for phone, allowing modern devices such as the Lumia 950 and 950 XL to drive an attached screen such as a monitor or TV, in much the same way as a dual monitor setup for desktop PCs."
"Along with phone support, there is also the new Build 10586 SDK which includes minor updates and bug fixes to the original 10240 SDK, and also a number of new APIs such as support for Bluetooth device pairing, Jump Lists attached to tiles, app listings in the Start Screen, and more."
You can check out the direct links to all the new Channel 9 developer videos at the source link below.