C# 12 - Definitely supported features

[The-Futurist]

I know that C# 12 is not yet released and I don't care what date it will eventually be released, but if I wanted to take it for granted, that when it is released it will definitely contain certain features, then what is that definite list of features?

Clearly "interceptors" are not something we can assume will definitely be available when C# 12 gets released, but what about the other listed features here and here and here?

If I were to "promise" some team of developers that when we get C#12 we will definitely be able to leverage say primary constructors or collection expressions or any of the other listed non-experimental features, would that be safe to do?

[CyrusNajmabadi]

that when it is released it will definitely contain certain features, then what is that definite list of features?

We cannot give definites on future releases. All information is subject to change.

If I were to "promise" some team of developers that when we get C#12 we will definitely be able to leverage say primary constructors or collection expressions or any of the other listed non-experimental features, would that be safe to do?

No. Until the release actually happens, all features are subject to change and potential withdrawal.

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However, if you want to instead give reasonable advise of what is most likely, then we can supply you with that information.

[CyrusNajmabadi]

For the tentative list, see: dotnet/roslyn#69074

[The-Futurist]

Many thanks, that's helpful.

[jnm2]

As for when, the C# language follows the release cadence of .NET, and .NET has been releasing a new major version each year in the second week of November, if I remember right.