It was heavily rumored to be happening today, and indeed it has. Google has just opened the flood gates for Android 7.0 Nougat which is now rolling out to Nexus devices. There's no announcement on the new HTC Nexus devices however, making it a rather interesting announcement. As we've never gotten a new version of Android without new hardware before. Google did also confirm that the LG V20 will indeed be the first smartphone to launch running Android 7.0 Nougat, which means these new HTC devices won't be out until probably October or later.
In Android 7.0 Nougat, Google says that there are over 250 new features. Some of the new features that Google is highlighting includes the 72 new emojis, as well as new Quick Settings controls. Now you'll be able to customize these Quick Settings to your liking. Something that manufacturer skins and custom ROMs have long been doing. Nougat will make you more productive as well, with multi-window, Direct Reply and Quick Switch. Some apps have already included support for the Direct Reply API, after all Nougat was in developer preview phase for over 5 months, so developers have had plenty of time to get going with Nougat.
When it comes to battery life, Google has made it even better. Doze was announced with Android 6.0 Marshmallow last year, and this year they've added some more improvements to Doze. Basically, your phone will drop into lower power usage when your phone is in your pocket, instead of just being still on a table. Allowing for even better standby time. More importantly, Nougat is now more secure. Android is bringing seamless updates, file-based encryption, Direct Boot and a few others to enhance the security of your device. For most users, the seamless updates will be the most interesting feature. As it will now allow you to install updates in the background, instead of having to reboot your device. Especially helpful with all of the security updates coming each and every month.
The OTA's are beginning to roll out for Android 7.0 Nougat now. However the factory images are not quite up yet. They should be appearing rather soon though.