I'm not sure I fully trust that, as the trademark filed is for 'Time Traveler' as opposed to 'Time Machine'!
I wouldn't be surprised if it is a Big Dipper though if I'm honest...
Yeh not entirely sure about it myself, although the look of it does match all the teasers, the fonts are all the same. It also all fits 'Time Traveler' and that was trademarked but they could have changed their minds on the final name. Apparently this logo leaked along with the full layout of the ride although all i've been able to find so far is the logo. We'll know in a couple of days anyway.