Windows 10 Redstone 2

• The first (codenamed Redstone 2) will likely arrive in March.
• Microsoft is planning at least two major updates to Windows 10: Redstone 2 in early 2017 and then a Redstone 3 in the summer/fall of 2017.
• Microsoft has just started rolling out Redstone 2 builds for Insiders to test
• The Redstone 2 Insider Preview is just getting started, meaning we have several months of development left before this next update is ready for the public.
• PCs are the first to get new Redstone 2 preview builds, with Mobile builds following in a few weeks.
• Twitter user WalkingCat has discovered several references to "Windows 10 Version 1703" in the latest test versions of Microsoft's operating system. These references refer to the year and month of a release, and Microsoft has previously used the same codes for its Anniversary Update (1607) released in July, and a November update (1511) last year.
• Update will focus on productivity improvements for the desktop, and will bring much-needed features and enhancements to Windows 10 Mobile users.
• Microsoft is expected to detail what the company is planning to include in its next major Windows 10 update at a special Surface PC event later this month.
• While Microsoft has started testing some new features of Windows 10 with Windows Insiders, most of the changes have been fairly minor so far.
• Microsoft is planning to bring a blue light reduction feature to Windows 10, alongside improvements to Cortana to help bridge the gap between mobile devices and PCs.
• Here's what we can expect to see show up in Continuum on Windows 10 Mobile with Redstone 2:

1. Independent Monitor Idle – Let one screen time out while you keep working on the other one
2. Proximity Connect – Keep your phone in your pocket and connect wirelessly to your dock
3. Customizable – Independently customizable Start screens across connected devices
4. More PC-like experience – Enable "win key + type"; Taskbar app pinning, System tray Windowing

Source: Windows Central, The Verge