What’s new in C# 14.0

ByMarius Bughiu December 1, 2024April 11, 2025

C# 14.0 will be released later this year, in November, at the same time as .NET 10. See here what’s new in the .NET 10 runtime, including performance benchmarks.

There are several new features and improvements in C# 14:

the field keyword
implicit span conversions
nameof support for unbound generic types
simplified parameters with modifiers in lambdas
partial constructors and events events
Extension members, extension keyword
null-conditional assignment

C# 14.0 is currently in preview:

Preview 1 (25 Feb 2025)
Preview 2 (18 Mar 2025)
Preview 3 (10 Apr 2025)

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