I am not expecting to hear about MP Hosting and Lobbies on the 30th - Expecting to hear what the MP modes are and hopefully see some in action but if they say how it all works then great.

At amazon this is the listing for the editor.
Map editor: deathtrap designer


Create and share your own maps using the most powerful and intuitive map editor ever offered in the Far Cry franchise. Your creations will get the attention they deserve thanks to its enhanced tools, improved interface, and the ability to publish and share your maps with the community.

But it was like that back in June or July when it went up.
So much negativity and uncertainty with people right now, that leads to speculation and now some are thinking we will only be able to create SP Mission Maps.

Like you said Wnio "We just don't know"
I am not expecting to be able to share a PS4 map with people on XB1 and vice versa, I think Alex Hutchinson's words were twisted and think he meant that each platform can share maps but on that same platform.
The words "You can share maps on all platforms" Could mean what I said above because all platforms will allow us to share our maps with the same platform.
Or he might mean that we can share our maps over all the platforms but I can't see it happening.

Sorry Buddy can't help - same as you guys in the dark just hoping.
We are putting together / upgrading the Far Cry HUB at our site and we don't even know what features the game fully has so it's difficult to say the least.