Originally Posted by Digatisdi
I've seen a few PDFs floating around that I cannot find at the moment but it looks like the most likely proposal is a secondary concourse, part of the current terminal but to the South with an underground shuttle/walkway connecting the two portions.
Actually it might be from earlier in this thread. I'll see if I can hunt it down.
Edit: here's a PDF with the two approved concepts
The mini terminal seems like a lot easier for them to get planes in and out than the main terminal expansion but it seems cheaper to just expand what they have in the other plan. It would be really weird to go to the Austin airport and take a tram to another terminal.