Verizon's HTC One Max has a treat soon, says HTC executive director of product management Mo Versi. Android 4.4.2 and Sense 5.5 have received approval, and will be making their way to users as early as Monday afternoon.
HTC Verizon One Max Owners! We have received technical approval for Sense 5.5 + OS 4.4.2! Expect the OTA update to start on Monday afternoon— Mo (@moversi) April 4, 2014
We don't yet have any sort of offcial change log, but a look at the 4.4.2 and Sense update on the HTC One gives us an idea of what to expect.
Come Monday, you can check for your update through your device settings.