I would imagine (again, in same boat as you re: experience with FPGA) that you need their dev kit & tooling (which likely entails licensing) and would need to embark upon porting one of the open(ish) sourced FPGA miners (e.g., https://bitcointalk.org/index.php?topic=9047.0)
Not knowing any better (blissful ignorance) this is of interest to me also assuming Altera do not have a major supply chain problem.