Unfortunately, my experience has been that Ikea will push out a firmware update, and then I don't discover it until the outside lights fail to turn on or off at their appointed time and have to be rebooted. Yes, we live in an age when you can reboot a light bulb.

Very much to their credit, though, the Trådfri hub doesn't depend on a cloud service just to operate. If that ever happens, thus endeth my foray into smart lighting. I've put my foot down: if it needs Somebody Else's Computer to function, I don't want it.