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On 23 sept 2019, Microsoft announced the release of .NET Core 3.0.

.NET Core is open source and cross-platform.  You can use .NET Core to run server applications on Windows, Mac, a dozen Linuxes, iPhone, IoT devices, and more!

Announcing .NET Core 3.0

Fully supported. Open source, yes, but fully supported with the full weight of Microsoft.

It includes many improvements, including 

  • Adding Windows Forms and WPF, 
  • Adding new JSON APIs, 
  • Support for ARM64 and improving performance across the board.
  • C# 8 is also part of this release, which includes nullable, async streams, and more patterns. F# 4.7 is included, and focused on relaxing syntax and targeting .NET Standard 2.0. 

Platform support

.NET Core 3.0 is supported on the following operating systems:

  • Alpine: 3.9+
  • Debian: 9+
  • openSUSE: 42.3+
  • Fedora: 26+
  • Ubuntu: 16.04+
  • RHEL: 6+
  • SLES: 12+
  • macOS: 10.13+
  • Windows Client: 7, 8.1, 10 (1607+)
  • Windows Server: 2012 R2 SP1+

Windows Forms and WPF apps only work on Windows.

Chip support follows:

  • x64 on Windows, macOS, and Linux
  • x86 on Windows
  • ARM32 on Windows and Linux
  • ARM64 on Linux (kernel 4.14+)

 If you missed the .NET Conf 2019 live sessions, you can watch the full videos list at Visual Studio Channel on youtube now!

 Check also,

closed with the note: Announcing .NET Core 3.0

If you don’t ask, the answer is always NO!