Got the letter. Had an '03 6.0L, but sold it a long time ago for fear I would be paying huge repair bills after warranty. The truck was nice but didn't seem like a smart one to keep.
It had the turbo replaced under warranty, also all new ball joints under warranty. I didn't pay anything for those repairs under the original new vehicle warranty, and I was the second owner. I was surprised that according to the letter, some people were charged a deductible. As usual, the lawyer gets the moolah, $12.8M plus expenses.