In a per curiam opinion, the SCT in Thaler v. Haynes overturned the 6th Circuit's decision to grant Mr. Haynes a new trial. In overturning the Court of Appeals, the SCT found that the lower court read too much into both Batson v. Kentucky and Snyder v. Louisiana. The SCT went on to say that those two cases do not require a trial judge to personally observe (voir dire here was handled by two different judges) a potential juror's behavior when ruling on a peremptory challenge based on demeanor.
For other reports on this case see:
SCOTUS Blog: Clarifying Jury Selection