Blue hides the rear brake beneath the bottom bracket, a move that many manufacturers are doing these days. This one isn't as sleekly integrated as the brakes on the TM01, Speed Concept, or Felt DA, but this is exactly what Specialized has done with their rear brake for years, and it's worked out well for them.
The Beaker Concepts Blaze is the company's second offering for a saddle-mounted bottle bracket. This time around, they've added a lot of extra features.