He's always had pretty good power - it's not like he's suddenly launching it to the mezzanine. It seems like he's just seeing the ball great and can now hit the belt-high fastball.
It's pretty glaring, but I pray that it's completely unfounded...I really like Desi and would hope he wouldn't go that route.
ETA: and it's sad the game has been so tainted that we even have that thought.