十一月中旬，说是能提高Raw格式的连拍张数和整体稳定性，后面这个是改善防抖的意思还是软件稳定性不清楚。。

Pentax has announced a firmware update for its recently released K-5 digital SLR. To be released in mid-November, the firmware promises to increase the number of RAW frames captured in continuous shooting mode and improve overall stability.

overall stability可能是总体上的，消除了一些小bug