This is a big deal, but just a reminder that this is the District (trial) court, so the next step would be the Circuit Court of Appeals, followed by an appeal to the Supreme Court. There may be some intriguing injunctions that come out of this, but we’re years away from a final disposition.
For the curious, this one came out of the DC Circuit, informally known to be the most technically and administratively savvy circuit, as it deals with a LOT of nitty gritty stuff coming out of Federal agencies.