Neiman Marcus — confirming an exclusive May 15 report by The Post — that said it has entered into a $600 million amended-credit agreement.

The Dallas-based luxury retailer, which also operates the Bergdorf Goodman store on Manhattan’s Fifth Avenue, said the revolving credit line, which expires in January 2013, can be expanded to a maximum of $800 million.

In May, The Post reported that Neiman Marcus was angling to replace a revolving credit line set to expire in fall 2010, underwritten by Deutsche Bank.

The new financing — whose lead bankers include Banc of America, Wells Fargo and JPMorgan Chase — is a relief for Neiman. Along with the company’s $250 million cash balance, the new facility provides “ample liquidity” to support growth, the company said.