I would be surprised also if they were going to discontinue it. I think they may have over-produced what they thought demand was going to be, but with the bike already tooled up I would think they would try and produce it at least a few years.
Perhaps they have stopped production until they see most of the 2014's being sold, and start again with a limited number of 2015's or to better gauge actual demand.
That being said...wouldn't we - as owners of this bike, become a rare figure. I can't remember if I have ever seen a 1 year production cycle on any bike, even some Suzuki's that were 10 years late in the styling department when they were introduced.
I think the best bet would be that the ST1300 isn't available anymore. I had seen a few ST1300's on showroom's that were 2 years old and never been titled...but this was a limited demand bike also. It took Honda 3 years later to stop production, although I think in Europe the "Pan European" sold ok over there.