How to declare a C# Record Type?

Question

I read on a blog that C# 7 will feature record types

class studentInfo(string StudentFName, string StudentMName, string StudentLName);

However

Answer 1

Record types were on the roadmap for C# 7.0, but were ultimately delayed until a later version of the language.

To quote Mads Torgersen in reply to this blog post,

[Primary constructors] are still on the radar, along with the related concept of record types (which we considered for C# 7.0), and I am hopeful that we can land on a better design – maybe one that encompasses both.

As of C# 7's release, the GitHub proposal for this language feature still indicates that the implementation is "In Progress."