I spoke with ALO over the weekend, the Pan Am is being discontinued. They will continue to support it, but are not producing more. There's no immediate direct replacement, but I was told they are working on some exciting things for later in 2015. ALO said the Pan Am was more popular than they thought it would be, but since it has been out for a couple of years, they need to start looking at updated options.
The Pan Am I am betting will be in demand for years. What a great unit and I wish I had kept mine.