Trump (maybe) filed a $10 billion lawsuit against WSJ and reporters. There is some question as to whether it has actually been filed yet. Experts say that as a public figure the lawsuit will be worthless, even putting aside the truth of the allegations made by the WSJ. But if it proceeds the discovery should be fascinating.
Also, it's worth nothing that it could take weeks or months for a court to rule on releasing Epstein grand jury testimony. Much was already released that could be, much of the rest is not releasable unless victims, etc. agree. So this is just a stalling tactic to avoid releasing the many gigabytes of data on Epstein that the FBI has -- and where we hear today they were ordered to flag everywhere they found Trump's name.