GTK 2

[NickDarienOne cs com]

Hi, I'm new to the list!

Anyway, I have a question.  I have heard some people say that they are 
running GTK 2.  How is this possible?  I am under the impression that GTK+ 
1.2 is the current official release, and that the in development version is 
1.3.  So, how can people be running 2.0?  Also, if there were a 2.0, would it 
function with the current release of GNOME?

Any help is appreciated, thanks!
~Nick