[zerocrates]

> This means that .NET Core will get new APIs and language features over time that .NET Framework cannot. At Build we showed a demo how the file APIs are faster on .NET Core. If we put those same changes into .NET Framework we could break existing applications, and we don’t want to do that.

The "slower" explanation doesn't really fit with that sentence to me... if Standard 2.1 already has things that Framework "cannot" have, then it seems like "stopped" is more accurate than "slower." I guess technically they only are saying that Core gets things Framework can't, not necessarily the standard, but I'm not sure that's much of a distinction in practice.

Of course it doesn't have to mean that Framework is just frozen but it would seem to make the Standard a bit of a dead letter (I'm not really familiar with how useful it is in terms of Xamarin/Mono/Unity).