I have it since March 2013 and have about 15k miles on it. My dealer says there is no new update since July 2013.
When the warning came up on the dash, the car starting shaking and the electrical system seemed to start to fail. The car was shaking and it felt like all the engine power was lost at the time. I immediately pulled over and had to be towed. I was in HV Mode at the time it happened.
Thanks,