Final answer:
Ross brings various pieces of news to Macduff in 'Macbeth,' including Macbeth's new title and the slaughter of Macduff's family.
Step-by-step explanation:
The news that Ross brings to Macduff in Shakespeare's play Macbeth varies at different points in the play. Initially, Ross brings Macbeth the news of his new title, Thane of Cawdor, as a reward for his valor in battle. Later, Ross is the bearer of tragic news to Macduff, informing him of the slaughter of his wife and children by Macbeth's orders. This devastating revelation propels Macduff towards seeking revenge against Macbeth, which is a central theme as the play progresses towards its climax.