[kiitos]

Immutability is a fundamental property of a language, it's not something that can be bolted on post-facto in a version update. Go as a language doesn't provide immutability.

[tapirl]

If the "for ;;" loop semantics can be bolted on post-facto in a version update, nothing else couldn't.

Go provides certain immutability.

[kiitos]

It does not. Believe what you will.

[tapirl]

You are not familiar with Go.