I travelled this route last week and specifically asked which version they had on board. I was presented with two different bottles to choose from - One was the "regular" NOBLE Brut Vintage and the other was a Bollinger Grande Annee 2015! The Bollinger was duly opened and I managed to polish the bottle off without too much problem . The CC said the Bordeaux was also from the October menu so they must be using up stock.
Let us know what you end up with.