We've been waiting for quite a long time. 12 hours is almost nothing ! Until that I'll be playing with Server flavor.
It's a server, they require password at logon. Maybe there is a group policy for not require password at logon?
It can be disabled using "netplwiz" just like in Windows 8 too, and prior to that. Although there is still the matter of pressing CTRL+Alt+Del on Windows Server operating systems.. but oh well.
You can still login to desktop on a server OS, when setting up typing "control userpasswords2" in run Just mark the user, you want to auto-login and set the password.. thats all