Any references to JUNOS implementation (and version implemented) for Option-E in draft-ietf-l2vpn-vpls-mcast-04.txt? Referenced in section 10.1.2 on page 17.
I assume it's implemented using RFC4761 signalling (and not RFC4762)
I can't find any information regarding Option-E but have been told it is already implemented.
My understanding was that Option E was a roadmap item (though this was for 9.2 so...).
Finding out what is officially supported can be more difficult than it should if you're wading your way through loads of guides.
Thankfully I found that there is a guide that details all current standards/drafts support and is (should be!) updated per JunOS release, it's the SW Hierarachy Guide.
I've attached it to this post as I thought it might be quite useful, most importantly it does seem to detail the exceptions to each implemented standard.
Guide can also be found here: http://www.juniper.net/techpubs/software/junos/junos93/swref-hierarchy/frameset.html