With the news that Trek's new Domane has a T47 bottom bracket, it's looking highly likely that BB90 is being abandoned.
Bottom brackets for all makes and models of bicycles at Trek Bicycle Superstore.
The BB90/95 standard is currently used by Trek. Two sealed bearings are pressed directly into the frame's bottom bracket shell. A step is molded in to the frame.
Wheels Manufacturing Inc. EVO Angular Contact Bottom Bracket for 22/24mm SRAM Cranks. Wheels Manufacturing Inc. EVO Angular Contact Bottom.