I am surprised at how well their servers are handling this. I am using the standard method of updating from the update manager and I am getting over 1 Mbit/s speeds.
So if you were waiting for the crowd to clear, no need to wait.
The download part was no longer than 30 min. I am not sure how long the entire upgrade took because I left my computer and the upgrade stopped at one part because it needed to ask me a question.
Interesting. My entire upgrade took 52 minutes, and only had two prompts. Two more than I'd like, but two compared to the 20 someodd I used to get is great.
So if you were waiting for the crowd to clear, no need to wait.