A reliable unnamed source say that the team will start the official final power cycle of all servers at 8PM.
Once they have all been checked and verified, login systems will be booted internally and checked.
After this the window to the login servers for the head start preorders will be activiated.
This entire process has been through many dry runs at the company and takes between 20-60 minutes.
So we could see live servers anywhere between 8:20 and 9PM.
I'll be reserving names at 8:15 with an end around pass into the cache servers....