Late November or early December launch, according to tipster.
This one's firmly a rumor for the moment, but it comes via a usually reliable source. Twitter's @LlabTooFeR, who has a solid track record with HTC leaks, says the European variant of the HTC 10, is looking like it'll get Android 7.0 Nougat around the end of November, or early December.
That's broadly in line with the Q4 2016 window given by HTC for unlocked models. As always, carrier variants will almost certainly take longer to receive the update — possibly slipping into early 2017.
We already got a look at HTC Sense + Android 7.0 in the Sprint-exclusive HTC Bolt, announced in the past week.
HTC 10 (EU) to receive Android 7.0 update by the end of November - begging of the December.— LlabTooFeR (@LlabTooFeR) November 14, 2016
In a separate tweet, the HTC leaker also says there's new Google Pixel test firmware doing the rounds internally. (HTC is the original manufacturer of Google's phones.) The new build NMF26I is numbered as Android version 7.1.1, bringing it in line with the current developer preview release for Nexus devices. A build number alone tells us nothing about what's new in 7.1.1 for the Pixels, nor is it surprising to see 7.1.1 in testing for Google's flagship phones.
In any case, with the possibility of Nougat OTAs from both HTC and Samsung before the end of December, we're looking at a busy few weeks for Android updates.