Sony has begun rolling out the Android Nougat update to some of the Xperia Z3 and Xperia Z5 lineup. The Xperia Z5 and Z5 Premium started seeing the update to the 7.0 build yesterday while today, the Xperia Z3+ and Z3+ Dual started having the update roll out to them. The update will take several weeks to get to everyone but you can always manually check for it by going to Settings>About Phone>Software Update. In general, you can expect the download of the update to be about 1.5GB for the phones and the update time will take 15-20 minutes including a reboot. Once you have it installed, you will have all the goodies that come with Nougat along with some improvements in the Sony apps on the phones.
If you don’t remember what’s all in Nougat, you can take a look at my review for the highlights.