Hi Marco.
I don't know much about the IKEA bulbs. If you can pair them with the Hue bridge and control them with the Hue app on your phone, then the Hue Lights plugin can be configured to control them as well. As you said, the plugin would probably need to be modified to add the model IDs oft he new IKEA lights, but once that's done, it'll work. I'd need to see the debug log output after you've already paired the lights with the Hue bridge and reloaded the plugin.