Hubble got an upgrade!?

So I guess I wasn't aware that the near-death telescope actually received an upgrade recently. I know several months ago they successfully sent astronauts up to work on it, but had no idea that they improved its performance beyond extending its life.

Check out today's APOD to help drive the point home, the Butterfly Nebula:
http://apod.nasa.gov/apod/ap090910.html

Absolutely gorgeous!