@gtb;

I actually have some good news for you right off the bat. The addition of an IoT network is something that has been long requested on the community and the development team looked into the feature for future releases. It appears as though most, if not all new routers from Deco and Archer will have a designated IoT network that can be enabled. For the Deco XE200 this can be configured with a variety of wireless frequencies to support your needs. There is also a beta firmware available for the Archer AX55 that enables this very functionality, presumably so that the developers can test the performance of the IoT network on older devices.

There is an option to split the networks and prevent devices from seeing each other, however the issue that is now arising is that almost every device wants to talk with each other, no matter the type. In the case of Kasa and Tapo, preventing the devices from accessing the main network would mean that your devices would have to always receive a command through the internet. If the devices on the guest network can see the devices on the main network, your Kasa/Tapo app would be able to locally communicate with the device and send a simple command over your local network.

  @gtb,

We have no information on what routers and when/if a specific models will receive a specific feature through a firmware update. Currently, the IoT network is being rolled out as standard on the routers that we are currently putting out for release. It looks as though IoT networks may be coming to older devices but there can be absolutely no guarantee of it. Don't forget that all the deco nodes are meant to work together, so even if the S4 were to not receive the update, an IoT network could still be supported by upgrading the main node of your network.

I will make sure to try and keep everyone updated if I see other Decos receiving the feature, or beta firmware become available.