What Does 2.0 Mean
All you can say is 2.0. It means? 3
I've heard other people say you're Katy Perry 2.0. I think this is a strange saying, what does it mean?
I.e. version 2.0. I like it more, more shiny, smaller.
Anyway, version 2.0 is the first version of the song, 2.1 means the next latest version, and so on. I think the person quoting the other person in your example is Katy Perry.
The second generation is usually called ipne 5 vs ipne 3.