Just a quick note, I had to replace mine today. A portion of the blade had separated from the base. Guess it's just from age and use. My CX-7 has 27K miles on it. Cost about $25 from Mazda.
I didn't check, but I assume not. Wiper blades, like oil and air filters, are a consumable, replaceable part. I'm surprised that Subaru has them under warranty.