I had to do dual boot manually which not very nice experience and not to say booting stage is more confusing than windows 7 like Boot screen with "Windows Developer Preview"+ sometime black "please wait" screen + Lock screen + Login Screen.
I have it installed in another partition and yes, it creates a dual boot menu, offering the possibility to choose which to boot and how long to wait.
In case of problems just use EasyBCD 2.1.