what is the definition of new programming language

[Sean]

Maybe this is an old topic or maybe this is a stupid question. But I am really confusing about it.
I learned C programming language in high school, and then I learned C++ in the first year in university. C++ likes opening a new world to me and gives me a new feeling about how to think the problems and how to construct the programs.
The D language has lots of good features, I am exciting about these features, but I can not feel as exciting as when I learn the C++ language. I do not know weather because it does not have a new thinking style about how to programming or something else.
Anyway, it is a really good language. But what is the definition of new programming language?