Does Windows Phone 8 support ogg as ringtones?

Why not just test and see? It would be faster than waiting for the answer here :winktongue:
But I fear it is not supported, as WP8 does not actually support a big variety of codecs.
 
It does not support ogg files as ringtones. mp3 or wma. The desktop app will covert some other formats (m4r) to a usable format.