Restaurant giant McDonald's Corporation (NYSE:MCD) could show the importance of value meals and new product launches when the company announces third-quarter financial results on Wednesday before market open.• See what the experts say about MCD stock here.Here are the earnings estimates, analyst ratings and key items to watch ahead of the quarterly results.Earnings Estimates: Analysts expect McDonald's to report third-quarter revenue of $7.09 billion, up from $6.87 billion in last year's third quarter, acco ...