You sent me a "thanks" and asked when he FB came out. As far as I know in 2005 for the 25' and in 2007 for the 27'. There was a brief flirtation with a 30' version in Classic trim - with a King size bed, also 2007 if memory serves me correctly.
Very VERY few dealers carry a full line of Airstreams - and sometimes www.airstream.com
itself lags behind in what is actually in production at any given moment, so I cannot be absolutely sure I'm right about the dates for the models that came out. I'd bet Colonial Airstream in NJ would have the exact information - and they get used units quite frequently.
To make matters worse, Airstream keeps renaming models and trim levels. In 2008 or 2009 they changed the "Safari" badging to "Flying Cloud" - trim levels about the same. This is the lowest priced version - and it comes in two levels. The cheaper of the two has mouse fur on the walls and Herr windows - which are held in with rubber gaskets and only have a small opening on the lower 1/4th of the window. The SE has big windows that open fully and bare polished aluminum.
The next level up is the International - aka the CCD. CCD stands for Christopher C. Deen who designed the first of these in 2002 I believe. Very slick modern finishes, big windows, bare walls, often with a single large "lobster bowl" sink that you can actually wash something the size of an electric skillet in. The first ones had a tropical oak laminate - black woodgrain for the walls - now the laminate is Wenge - a dark brown. The International has had two "special" models, the Ocean Breeze and the Serenity, which replaced the OB. Serenity - a very few may have come out in 2009, but mostly it was announced in 2010. OB was 2006 - 2008 as far as I know. Again check Colonial's website for the best range of the current options.
The highest price is the Classic Limited which has hickory interior, corian, pleather seating - it's nice, but...
Consider carefully whether you want twins or a queen. I have the queen but wish I had twins for ease of accessing storage and so that the bedroom had a bit more flexibility and floor space to maneuver around in.