Fxguy wrote:How often is that list updated
That list is fairly regularly maintained. Lots of Z-Wave options, not so much with Insteon since they are just a single manufacturer. As we note at the top, Z-Wave devices that aren't included will often "just work" because of how Z-Wave devices identify what they are and what they do. So a device that turns loads on/off will often automatically work without being explicitly added to Indigo. Those devices won't show up on the list because we don't know about them. Devices like that can be added if users submit the device information (from a button in the config dialog if we don't already know about it) and it'll get added to the list for us to verify.
Insteon doesn't have this kind of discoverability so any device must be manually added to Indigo so that the server will know about it.