A post by the manager of the Android Beta Program's Google+ page seems to indicate that Developer Preview 2 of Android 7.1 is slated to go live shortly. Orrin Hancock, owner of the page, says that DP2 actually began rolling out today, but we've not received any tips suggesting that's the case. No one who has replied to the thread seems to have gotten it, either, so perhaps the rollout has been slightly delayed or extremely, incredibly, strangely limited (I would hedge on the former).
Anyway, Android 7.1.1 DP2 will apparently be available for the Nexus 6P, 5X, Nexus 9, Android One, and Pixel C. Build numbers are NPF26F for all devices except the Pixel C, which has the build number NPF26H. We're not seeing any signs of factory images on Google's image pages yet. According to the beta page, the Nexus 6 and Nexus Player should be included in this release (they were not part of DP1), but they are not listed in the post. We're currently looking into this.
We also have no idea what changes DP2 entails, but I'm sure we'll be finding out soon enough.
There it is.
The dev preview is live. Still just the Nexus 6P, 5X, and Pixel C.