Production of a 13-inch Retina display destined for a new MacBook Pro is underway, according to NPD DisplaySearch analyst Richard Shim.

The 2560×1600 pixel display is reportedly being made by Samsung, LGD, and Sharp.

“The supply chain indications are that it’s for a MacBook Pro 13.3 — not a MacBook Air,” said Shim.

He also noted that the number of units being produced are far higher than those of the 15.4-inch display.

“With 15.4 it’s production of a few hundred thousand units versus one to two million for the 13.3,” he said. However, the exact number depends on yield rates.

“It depends on how the yield rates turn out. If the yield rates are really good and they’re at 70, 80, 90 percent, then they’ll probably be in the million and a half range,” he said.

Via cnet