The DC District Court has ruled that Verizon must turn over the names of file-sharing customers to the RIAA.
From the conclusion:
Verizon's motion to quash RIAA's February 4, 2003 subpoena is denied. The Court finds that § 512 of the DMCA . . . does not violate the "case or controversy" requirement of Article III of the Constitution, and does not abridge the First Amendment rights of Internet users. Because Verizon cannot demonstrate that it has a substantial likelihood of prevailing on the merits of its statutory or constitutional claims, and has not shown that it will be irreparably harmed if a stay pending appeal is not granted, Verizon has not met its heavy burden "to justify the court's exercise of such an extraordinary remedy." Verizon's request for a stay pending appeal is therefore denied.
However, the judge gave Verizon two weeks to appeal, so this issue is hardly dead.
See stories here and here. You can access the DC court's rulings here [PDF] and here [PDF]. (Links via How Appealing.)