This is a bit late but here is the info regarding my 09 WRX engine crap out.
Model: 09 WRX 5-door
Date of Birth: 08/08
Miles at time of crapout: About 7500
My engine never totally failed but there was a faint knocking and I took it in right away. They did find pieces of metal in the oil.
They replaced the whole engine long block. They ran tests on the turbo and showed that no damage was done so they wouldn't replace it.
Runing great since. There is 9000 plus on it now.