Nginx 1.x and Vary header HTTP

Hi,
I’m reading this web page:

that leads to this statement (http://wiki.nginx.org/HttpProxyModule):
“nginx does not handle “Vary” headers when caching.”

I found this bug tracker page:
http://trac.nginx.org/nginx/ticket/118

that seems related to the same topic.

Are there news about supporting / honoring the Vary header using nginx
purely as a reverse proxy in front of IIS / Tomcat / Apache webservers?

I’m using nginx 1.2.6 on a freebsd 9.1 amd64 box.

Thanks in advance,
d.