@Fred_C,

Firstly, I will need to reach out to my team to see if there is any information about what the changes actually entailed.

Saying that, overall, there have been a few updates to help some models and devices automatically use the correct bands. Devices with two 5 GHz bands actually used different parts of the 5 GHz spectrum, allowing for less interference and more channel coverage. If you can see that it is being broadcast, the second band has likely been folded into the first. However, they will still function the same. In fact, this would likely mean that your network will be able to more effectively allocate resources towards your backhauls and connected devices.

If you have a Wi-Fi scanner app on your phone, you will likely be able to see the second band being broadcast.

Have there been any other odd behaviors you have observed since this appeared to have started?