Supreme Court Justice Ruth Bader Ginsburg was released from Washington Hospital Center on Friday morning and was expected to return to the court this afternoon, the Supreme Court said in a statement.Ginsburg, 76, was taken to the hospital Thursday evening as a precautionary measure after she became faint following a treatment for iron deficiency.Ginsburg was diagnosed with pancreatic cancer in February. Although she quickly returned to work on the court, that type of cancer has a low survival rate, and her illness prompted a round of speculation over whom President Barack Obama may nominate to replace her, should she no longer be able to serve.Ginsburg’s return to work, the fact that she has been in good health and the retirement of Justice David Souter quickly tamped down that speculation.Ginsburg’s latest illness will likely increase speculation in Washington, D.C., that Obama may be on the verge of making his second Supreme Court nomination. Earlier this month, court observers and others were taken by surprise when Justice John Paul Stevens hired only one clerk, rather than the normal two or three. That was taken as a signal by many that Stevens is preparing to retire sometime in the next year.