So we don't have to use mod_dav_svn with Apache.

I am also really curious about this one, the reason I am still using Varnish with Apache is because of SVN.
I don't want to run a complete webserver just for 1 virtual host with mod_svn.
Is there any progress or future plans for this functionality?
I really want to move from Apache + Varnish + mod_php => Nginx + PHP-FPM