I'd like to add that I already count Javascript as a "big language" as I wrote:
As we all know C, C++, C# and Java are these big mainstream languages of today with “recent” additions Python, Ruby, Javascript and, especially in the Apple world, Objective-C.
I totally agree with you that Javascript is going to get much bigger but to me it is already big so it doesn't even need to contend against the other languages in my blog post ;).