A declaration of right - also called (at least in my jurisdiction) declaratory relief or just a declaration -is an authoritative statement, by a court, as to what the legal rights of the parties are.If I am understanding a "declaration" right, it can preemptively prevent an attempt to "de-authorize" the OGL 1.0a. At least jurisdictionally.
If you are familiar with what a declaration can do, can you clarify?
That's what it does. It has no further consequences. It's not an injunction.