One of the perks of having a Nexus device is that you can rest assured that software updates will be thick and fast. If an update needs to go out, you'll get that update far quicker than any other devices. So, it's with no surprise then that the Nexus 7 has been the first device to get Android 4.3.1. It came out of the blue and appears to be only rolling out to LTE versions of the device. Whether or not other devices, including the WiFi Nexus 7s, will get this update remains to be seen but, a .1 release from Google normally means that they're updating the code as a whole but, this doesn't appear to be much of an update.
Coming in at just under 10MB, the JLS36I build of Jelly Bean apparently improves performance and the like. As Android Police are reporting, the update is rolling out in numerous parts of the world and enterprising folk have gathered update URLs, depending on which build of Android 4.3 you're coming from:
This update has the same radio as Android 4.3 - (DEB-G00_2.25.1_0802) - and we can't imagine that there's too much in the update as a whole. Nevertheless, Nexus 7 users of the 2013 variety should be getting the update through to their LTE models any time now. While these updates are often staged, we doubt there's as many LTE devices active as there are WiFi models so a quick rollout should be expected.
Let us know in the comments below if you've gotten the update and if you're running a WiFi version of the Nexus 7 and see 4.3.1 pop up on your radar, be sure to let us know.