In a decision that has already garnered massive press coverage and commentary the Supreme Court yesterday granted certiorari in the case that will be known as Wal-Mart v. Dukes. The 9th Circuit’s opinion affirmed certification of the largest-ever employment class action. (Too large, in Wal-Mart’s opinion.)

The Supreme Court will not review all of the issues involved in the petition for certiorari. It has limited itself to Wal-Mart’s Question 1 (roughly: when can plaintiffs seek Rule 23(b)(2) certification for a class seeking money damages), and has ordered briefing on an additional question:

“Whether the class certification ordered under Rule 23(b)(2) was consistent with Rule 23(a).”

So what does all this mean? In the short term, not too much. Argument is in the spring, the opinion is expected sometime mid-summer. Through that time, Ted Olson’s team at Gibson Dunn & Crutcher, Brad Seligman’s team at The Impact Fund (not to mention many, many, amici) have their work cut out for them. There may also be some increased motion to stay activity in labor class actions. Defense counsel are going to want to stay litigation in case the Court rules that 23(b)(2) class actions cannot support monetary damages like those the plaintiffs seek. Plaintiffs’ counsel are likely to fight hard against those stay requests; any classes they can certify (and get through Rule 23(f) review) before the Dukes decision comes out will be difficult to reverse.

Longer-term, it’s difficult say at this point. Court-watching is even more like Kremlinology than plaintiff-watching. The fact that the Court has eschewed the various statutory and Constitutional arguments the defendants raised indicates that it may be more interested in narrowing the scope of any decision it issues. (Although the Rule 23(b)(2) issue is controversial enough.) But the fact that the Court has ordered briefing on the separate question of whether the certified class met the Rule 23(a) requirements (numerosity, commonality, typicality, and adequacy) indicates that Wal-Mart’s general framing of the class as simply too large to certify may have some traction.