The Forbes law blog thinks they might be:
The Supreme Court may announce as early as Monday that it plans to revisit the controversial issue of pleadings standards under Rule 8 of the Federal Rules of Civil Procedure.
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Critics of Iqbal respond that unless they can get past the pleadings stage and engage in discovery, they have no way of proving that senior officials were directly involved.
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If the Court takes any action on Ashcroft’s petition at Friday’s conference, it will announce its decision on Monday.
Source: Terror-Related Case Has Supreme Court Poised To Revisit Pleading Standards Controversy - On the Docket - Inside the courtroom - Forbes
I'm not hopeful that the current makeup of the Court will overrule Twombly and Iqbal. Nor am I hopeful that any court can give an objective test to determine whether an allegation is "plausible" or not. Several years ago, an allegation that Bernie Madoff was running a multibillion-dollar Ponzi scheme wasn't plausible, but it was factually true.