Download finished for me in about 15-20 minutes.
Promptly loaded it up and went to a local system I hadn't mapped. Flying slowly towards a planet, trying out some of the new scanner features. At about 100km from the planet's surface I attempted to drop into normal space. The animations started for dropping out of cruise, but my ship never dropped out. Stayed in cruise as my ship promptly flew right into the planet. I could actually turn my head a bit and see the surface wire frame as my ship kept flying. Then I received an error that said I couldn't connect to a server. Oops...
Maybe I'll give it a day or two before I fire it up again.