The first update for the Android N preview is now available. For now, the update is available through new factory images, but should be rolling out over-the-air (OTA) before long, if it isn’t already, I would imagine.
The updates are showing up for the Nexus 5X and Nexus 6P as build NPC56W, while the Nexus 9 is getting NPC56X. The rest of the Nexus line-up isn’t seeing new files just yet.
You can grab the new factory images at the links below:
Instructions for flashing factory images found here.
We don’t know what is included in the update, but this isn’t still a part of preview 1. Our assumption is that this update may reduce some bugs and potentially help performance a bit.
UPDATE: The OTA update is rolling out to the devices above. Readers in the comments have seen the 6P update and my Nexus 5X just got it as well.