I have booked a trip from Mumbai to SFO in Jan 2013. I booked an award travel, and will be flying in Business Class. It is more than 3 months away, and my itinerary on Delta.com shows that BOM - AMS - ATL will be on A330. In the past several months, I see that DL is flying 767s on this route. Can I totally trust that DL will switch to A330 in Jan, and that I can fly on better Business class product? Do any of you have a view on this?