Trek’s development of a new TTX time trial bike could almost have been predicted: Giant, Scott, and Specialized have all engineered new TT frame platforms for their ProTour teams in the last 12 months, while Trek’s design cycle apparently remained static (at least in public).
Design Features
It looks like some big changes from the current TTX, the stem and fork crown merge in front of the "head tube". This hinged design is similar to what has been seen on Look and BMC TT bikes, as well as the current crop of UCI-compliant bikes from Giant, Scott, and Specialized.
Most notable on the front end is the apparent absence of a front brake — however; it’s not missing, just hidden between the fork blades. In fact, zooming in on head-on photos of the bike in action reveals what appear to be caliper pivots, and possibly an enclosed area for cable attachment. While most have tucked a front brake behind the fork crown, Trek looks like they took an extra step of actually hiding it IN the crown. The fork blades look especially wide, both to house the front brake, and maybe maximize airflow and the benefit of a three-spoke front wheel. 
The rear brake is also hidden under the chainstays, and in fact not just hidden, but again integrated into the frame tubes. Close inspection of the photos shows the gap between the brake arm and chainstay, as well as a brake pad and fixing bolt. The brake arm is so perfectly matched to the chainstay that it could easily pass for the stay itself.
I’ll I can say is Trek looks to have done it again and now I want it. I can’t wait to see the real thing.
The rear brake is also hidden under the chainstays, and in fact not just hidden, but again integrated into the frame tubes. Close inspection of the photos shows the gap between the brake arm and chainstay, as well as a brake pad and fixing bolt. The brake arm is so perfectly matched to the chainstay that it could easily pass for the stay itself.
I’ll I can say is Trek looks to have done it again and now I want it. I can’t wait to see the real thing.
