One of the issues when it comes to the latest version of Android is that it is often slow to be released. Such is the case for Android M (also known as Android 6.0 or Marshmallow), and it is probably going to be the case when Android 7.0 (also known as Android N or Nougat). This is the latest news on Android M Version 6.0 Marshmallow and Android Nougat Release Date for Sony Xperia Z5, Z4, Z3, and Z2 on Sprint, AT&T, T-Mobile, US Cellular, and Verizon.
The issue with Sony is that much of the information about the Marshmallow release dates don't seem to apply to carriers in the United States. Granted, we know from sites like Tech Radar that it will come to the Xperia Z5 series (including the Z5, Z5 Compact, and Z5 Premium), the Z4 Tablet, Xperia Z3+, Xperia Z3, Xperia Z3 Compact, Xperia Z2 Tablet, and Xperia Z2. There are plans for an upgrade to the Xperia Z3 Tablet Compact, Xperia M4 Aqua, and the Xperia M5. While the Xperia Z1 and Z1 Compact will not be getting the upgrade, there are confirmed plans for the Xperia C5 Ultra and the Xperia C4.
Generally, as the latest version of Android is very slow to pour out, and it comes to whatever carrier gets it first. There really isn't any pattern forming as to who will get it first. Sites like Android Authority usually outline who is going to be getting it, but there isn't much information for this company like on Samsung, HTC, LG, or Motorola.
If you are a Sony user of a newer device in the United States, your best bet is to see if you can't get the OTA (Over The Air) download of Android Marshmallow now. Just go into the "Settings" and "System Update" to see if the upgrade is available. The upgrade may not be available depending on your carrier like T-Mobile, Sprint, US Cellular, AT&T, and Verizon. Feel free to leave a comment here saying whether or not you received your Marshmallow on your Sony device, as well as what carrier that you subscribe to.
Other news about Sony includes some of their new smartphones in the United States. According to Phone Arena, Sony started selling the Xperia XA Ultra stateside, after a week after releasing the Xperia XA and Xperia X Performance. In case you didn't know, the Xperia XA Ultra comes with Android 6.0 right out of the packaging, which is compatible with AT&T and T-Mobile, as this unlocked GSM/LTE device can't be used on CDMA carriers like Verizon, Sprint, and US Cellular.
So what will be the first Sony devices to receive Android Nougat? Chances are, it will be the aforementioned Sony Xperia X devices first. Given that the newer Android devices receive the upgrade first, it will probably happen in this order: Z5-branded series (Z5 Premium, Z5 Compact, and the simple Z5), then the Z4 tablet, and the Z3 series. The Z3 series is pretty popular, so it would not be surprising if Nougat comes there. Sort of like how the Z1 series won't be getting Marshmallow, it will be unlikely that the Z2 will get Nougat.