Here’s a story about it from the Montreal Gazette, and here’s Puck Daddy’s story about it. In short, Blake suffered a depressed skull fracture. He’s still in the hospital and out of action indefinitely, but reports are saying he’ll make a full recovery.
Admirals Roundtable 
It wasn’t the check, it was the skate blade and the ice hitting Blake’s head at the same time. I wish Blake a speedy recovery!