A friend mentioned to me that they were going to play on a private server and would have to grey market all of the stuff they've pledged for because our pledges won't be usable on the private servers. Is this true? Is there a link/source?

Private servers will lag behind the PU is what I've heard, but how far? It will eventually have everything, yes?

How big can a private server be?

Will CIG host them (for a fee) or are we on our own?

Will they support mods?