Today, over 95% of all extension users are on Visual Studio 2015 (14.0) or newer. So, if I were to write an extension today, I would target [14.0, 17.0). 

The Project File Tools Visual Studio extension provides package name and version IntelliSense, tooltips for packages, and more, when editing a .csproj file in Visual Studio 

Visual Studio 2019 Launch Event
Tuesday April 2, 2019 | 9:00am PT
52 days, 21 hours, 29 minutes until the Visual Studio 2019 launch
 

A better multi-monitor experience with Visual Studio 2019 

MPVCI – a simple packaged installer for all the latest VC++ redists. 

Add ASP.NET Core projects to GitHub using Visual Studio 2019 

We received tons of updates from Microsoft all across the board - from new experimental frameworks (Blazor) to quick iterations of the “Core Suite” (.NET, EF, and ASP.NET) and Visual Studio. 

I wonder if Microsoft knew what it had on its hands back in in 2015 when it created Visual Studio Code, the little code editor that could.  

Announcing Visual Studio 2019 Preview 1