Tony Martin (Omega Pharma-QuickStep) had a fleet of Zipp aero clincher wheels at his disposal for the prologue, including these carbon-rimmed flat clincher discs - which aren't even listed on Zipp's web site.
Lotto-Belisol captain Jurgen van den Broeck had a new Campagnolo disc wheel fitted to his Ridley Dean today. We don't have specific details on it at the moment but the full carbon construction is certainly lighter than the antiquated model Campagnolo currently offers and the freehub body is finally properly sized for an 11-speed cassette.
Lotto-Belisol riders were using a new Lazer time trial helmet during today's prologue. In keeping with current trends, there are no forward-facing vents at all (likely for better aerodynamics). Two lateral ridges on the top are presumably there based on wind tunnel testing.
Saddles took a slight tilt upward on many bikes to help riders maintain their positions while tucked. The UCI recently decided that add-on friction material wasn't allowed unless it was built into the saddle.
The paint job on this Saur-Sojasun time trial bike was so convincing that we didn't even notice at first that it's actually a Trek Speed Concept, not a Time RXR. Saur-Sojasun had at least two of them in its pit area today.