A new firmware version 220.127.116.11 is available for the Leica M typ 240. White balance accuracy, particularly in skin tones, has been improved. Improvements have also been made to video performance, color shift on some coded lenses, and to the stability using Live View with and without the EVF-2. This version also includes a number of fixes.
Download a copy of the firmware, instructions, and description on the Leica site here.