If you take a look at the picture you see that the start option is missing totaly
Leaked screenshot version
Hopefully it will comeback because lots of companies upgrades over time, and using some computers without start meny and some with will only confuse the users and generate lots of support questions on the IT department.
And Microsoft should also be aware that a total change in users interface will generate the question: "should we change OS providers as well when the changes will be this big anyway?"
We haven't seen the "beta" (that now might be called “Consumer Preview") so it's hard to tell, the sceen shoot can be from just another set of "what if" views.
With just week left I am for sure exited