Dan has made the following post in the LOR Forums:

We have not decided how we will implement the new features. No matter what way we go, if you have a card that works with the LOR protocol today, that card will work on the LOR network in the future. We will  of course make required firmware changes for cards made by LOR and we will make changes for cards made by other vendors who have copied the LOR protocol.

LOR will issue firmware changes for all controllers using the current protocol, including D-Light.