Just got mine back a little while ago. They spent about an hour on it. Turns out there's two parts to the recall - one is the recliner part mentioned in the letter, the other is a revision to the seat bracket. Apparently not many cars are affected with the recliner but most going through are having the bracket replacement done. They reckoned they had a fair supply of stock for the swap, so it sounds like they're expecting plenty more to come through.