Here's the actual source of documents in the case [1]: https://iapps.courts.state.ny.us/nyscef/DocumentList?docketI...
The most recent filing is the court's order granting Intervenor-Respondent Coindesk's Motion to File a Sur-Reply, which is a very procedural element.
Backing up: usually, in court cases, when there's an argument to do something, one party writes a brief, the opposing party writes its brief, and then the first party rebuts the opposing party's brief. Opposing party usually doesn't get a chance to rebut again. This order is letting the opposing party get that chance, and it was done because the first party made new arguments in its reply brief that it's not procedurally allowed to.
The court hasn't rejected Tether's bid to conceal the reserve records... it hasn't reached that point in the case yet. From the current posture of the case, I would guess that it's feeling more sympathetic towards Coindesk than towards Tether, but that really doesn't mean much in terms of what the actual ruling will be.
[1] Any news organization that doesn't provide a link to the actual docket when discussing cases should be considered irresponsible.