Homebuilding company Lennar Corporation LEN could highlight falling mortgage rates and the impact of a potential rate cut when the company reports third-quarter financial results Thursday after market close.Here are the earnings estimates, what experts are saying and key items to watch.Earnings Estimates: Analysts expect Lennar to report third-quarter revenue of $9.00 billion, down from$9.42 billion in last year's third quarter, according to data from Benzinga Pro.The company has beaten analyst estimates f ...