The Galaxy S7 and S7 Edge users will be quite excited right now as Samsung released the Nougat update as beta for their devices earlier. But Nougat beta is available as an OTA only for those who participate in the program, and get selected for the update. For everyone else thankfully, the firmware is available for download of the Android 7.0 build, which is G930FXXU1ZPK4 for the Galaxy S7 Nougat update, while G935FXXU1ZPK4 for the Galaxy S7 Edge Nougat update.
You can download the Nougat firmware right now for your device. And then install it manually, using the Odin PC software. This is an easy process, which anyone can perform, even without any prior knowledge of this.
Download Android 7.0 Nougat beta firmware
Visit the above linked pages to download the firmware for your device, and then go on to install it using the guide linked at those pages. Remember, you have to flash all the four files you get upon extracting the firmware, using Odin.
Samsung has taken more time than expected in coming out with the Nougat update, and that too in beta type. The Moto Z Droid and Moto G4 Nougat beta has been out for quite long now, and can hit the stable release anytime now.
Moreover, LG G5 Android 7.0 update is already out in Korea, and it could see a release in Asian countries like India, China, etc. anytime now, with European ones (UK, Germany, Netherlands, Russia, etc.) also in contention.
Those popular devices who are unlucky to not be supported by OEMs for Nougat update anymore can rely on world’s most popular custom ROM CM14 to deliver the 7.0 upgrade to such devices, in unofficial way. Have a look at CyanogenMod 14.1 | CM14.1 Download and Device List page of ours to get the whole bunch of devices for which CM14 is available.
Sony also has the Nougat update out for its X Performance under the Nougat beta program, while they have a separate program called Concept for Android, which gets you Xperia X Nougat update. Lastly, Huawei Honor 8 Nougat update is also available via beta channel, though it’s limited to only Indian users right now.