Shimano announces XTR Di2 electronic shifting for mountain bikes

I’m not sure why you’d want or need electronic shifting for a mountain bike, but if you do, you’re in luck!  Shimano now makes such a device.  I question the reliability of this though…I just can’t imagine this being comparable to a manually operated derailleur.  Neat gimmick though.  You can read more at gizmag:Shimano announces XTR Di2 electronic shifting for mountain bikes.