I believe that the update will allow the battery to run down 27% more before the engine kicks in to recharge it. This lengthens the time between engine starts & stops, saving fuel. And rather than increasing the number of charging cycles, it will actually reduce the number. What impact, if any, the 27% deeper discharge will have on battery life has not been mentioned.Sounds odd to me as well. sounds like the battery might be running to may cycles that could possibly shorten the life span.
Replacing the battery won't be cheap either, I have heard upwards of $9000 to replace them.