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Availability of 15" MacBook Pro with Touch Bar slips ahead of rumored refresh

Amid rumors of an incoming hardware refresh supposedly set to debut at next week's Worldwide Developers Conference, Apple on Monday updated online availability of its 15-inch MacBook Pro with Touch Bar models to push back estimated delivery dates to June 5.

While not a clear sign of an incoming MacBook Pro with Touch Bar revamp, Apple often adjusts product availability just prior to launch in order to clear up channel inventory in preparation of incoming new hardware.

When ordered in the U.S. today, the 15-inch laptop is showing an estimated delivery date of June 6 to June 8 with free shipping, and June 5 to June 7 with priority shipping. In-store pickup is currently available on June 8. Similar dates are reflected on Apple's online storefronts in major markets including Australia, France, Germany, Hong Kong, Italy, Japan, Spain and the UK.

The dates line up with WWDC 2017, which kicks off with a keynote presentation on June 5.

Other countries, such as Brazil, Canada, China and Mexico are showing turn around times of 3 to 5 business days for both models.

As of this writing, only 15-inch MacBook Pro with Touch Bar models are impacted by the apparent supply constraints. Apple's 13-inch MacBook Pro with Touch Bar and 12-inch MacBook, both rumored for refresh, show delivery dates of May 31 in the U.S. Further, the 13-inch MacBook Air, which might benefit from minor processor speed improvements, also delivers by May 31.

MacRumors spotted Apple's updated MacBook shipping schedule earlier today.

According to recent reports, Apple is planning to break from tradition and announce new hardware at WWDC this year. In addition to updated MacBooks with Intel Kaby Lake processors, some expect the company to unveil a Siri home speaker designed to compete with dedicated virtual assistant accessories like Amazon's Echo.

Rumors also point to the debut of new iPad Pro models at Apple's annual developers conference, including a version with an 10.5-inch form factor.

WWDC was last used to launch new hardware when Apple unveiled a revamped MacBook Air lineup in 2013 .