Bloomberg reports the biggest upgrade will see Apple introduce Intel’s Kaby Lake processor to the MacBook Pro with Touch Bar, a machine that was only just introduced last year. It’s unclear if the company’s high-end laptop will receive any other updates, or if its price will change as a result of the new processor.

Additionally, the 12-inch MacBook is also expected to be upgraded with a faster Intel chip, while Apple’s 13-inch MacBook Air, a computer that hasn’t seen a spec upgrade since 2015, will receive some love with a new processor. Apparently, sales of the Air remain strong, leaving Apple no choice but to upgrade it.

Because these machines aren’t getting sweeping upgrades, expect them to be a mere footnote in Apple’s WWDC keynote. The machines will reportedly be joined by a Siri speaker and several iPad updates, including the introduction of a 10.5-inch iPad Pro.

Seeing as Microsoft just unveiled a new Surface laptop, it’s in Apple’s best interest to keep its machines up-to-date in order to remain competitive. Apple’s laptops will likely be announced alongside a new version of macOS, which is rumored to feature pro integration between the iPad Pro and Macs.

Apple’s WWDC keynote kicks off on June 5.