I was told last week you sometimes need to ask, it was not in the book/magazine (what a hoot that thing is, I miss the old menus) on any of my recent flights but was onboard 3/4 flights. I mentioned up thread a purser gave me some info, before it appears some blogs picked it up that Rose was going to be offered out of DXB. They are supposed to be loading at least 1 bottle of Dom Rose, or he said something else he deemed as "sommelier choice" out of DXB, basically one bottle of something off menu. I was flying EK359 so a return to DXB, but as I mulled over the not-so-inspiring wine list the wonderful purser said let me see if I can find anything fun for you. We went on to chatting and he gave me this info, said something along the lines of most FA's either aren't aware or aren't going to go looking proactively. If this is all true or not I am not sure, but he did find a bottle of 2009 Rose on EK359 which should not have been there according the menu or online.