This one is a biggie! Weighing 737.5 megabytes, software update 2.42.617.1… has a suspiciously small changelog. All we are seemingly getting in it are the December Android Security patch and some unspecified system enhancements. There must be more to this update than meets the eye, but so far we do not know what could it be. We will let you know when we learn more.
Anyway, the update is available over the air, but it may be some time before it reaches your region. Remember to make sure that your phone is charged and connected to wi-fi before downloading it!