From Stereo Bikes:

We are even louder…this is how we start the new season! Here they are, the brand new line of 2011 Stereo Bikes completes! We can only say…BANG YOUR HEADS FOR A GREAT LINE OF ROCKIN 2011 Completes! Again, we pushed the limits Here are only some of the new features:
•    new lighter frame, smaller tubing, shorter rear end,
•    new updated frame geometry,
•    new custom lasercut seatstay brigde “stereo logo”,
•    new improved integrated seatclamp design,
•    new slim bigger handlebar design,
•    new casette hub,
•    new stereo audio grips,
•    new stereo ac seat/post combo,
•    new slim hub design,
•    new slim round tubing crank,
•    new chainwheel design,
•    new rem. brake mounts and cable guides,
•    new linear cable,
•    new stem design,
•    new fat odyssey dirt path and path tires
•    new all black brake hardware