These customers will be able to enjoy free refills on hot brewed or iced coffee, or hot or iced tea during their visit. Starbucks says folks must have their first beverage served in a ceramic mug, glass or personal cup — no disposable vessels — to receive free refills.

Starbucks fans can now get free refills for some drinks — but not all. The coffee chain is also bringing back its self-serve milk and sweeteners bar.

Starbucks is scheduled to report earnings after Tuesday's close. Here's a closer look at what the Street expects from SBUX.

Key Takeaways Starbucks reported fiscal first-quarter results that topped analysts’ expectations, despite sales and profit declines year-over-year.The better-than-expected results came as new CEO Brian Niccol said the company made progress toward its "Back to Starbucks" strategy.

Brian Niccol, who is four months into his new role, has set forth a raft of measures to improve the coffee chain's business.

Starbucks has reported better-than-expected sales in its fiscal first quarter as some of its turnaround efforts start to take hold.

Starbucks reported a smaller-than-expected fall in first-quarter comparable sales on Tuesday, in early signs of the struggling coffee chain benefiting from CEO Brian Niccol's efforts to revive demand.