An update to Android 4.4.2 KitKat for the Samsung Galaxy Note 10.1 (2014) has started to roll out to owners of the devices. The update that is rolling out is for the WiFi-only version although updates for the 3G and 4G LTE models should be following soon. Like other devices, the update primarily brings the improvements that are part of Android 4.4.2 to the devices and is light on Samsung specific updates. One item we are waiting to get reports about is whether Samsung included their Magazine UX. The Magazine UX was introduced this year when Samsung rolled out some newer tablet devices, although Samsung has since backed off that UX and indicated it will work more closely with Google on being more consistent with Android design concepts.
If you have the Galaxy Note 10.1 (2014), you can check for the update by going to Settings -> General -> About phone -> Software updates. It may be a few days before it shows up for your device though.