Federal Reserve policymakers will meet this week for the first time since they significantly revised the Fed’s operating framework in ways that will likely keep short-term interest rates near zero for years to come. As a result, analysts expect the Fed will keep its benchmark rate unchanged after the two-day meeting that ends Wednesday. It has been pegged at nearly zero since March after the pandemic and the measures taken to contain it essentially shut down the economy. But the statement that Fed policymakers release Wednesday is expected to contain revisions that reflect the sweeping changes that Fed Chair Jerome Powell announced late last month in how the central bank operates.