According to Bloomberg's industry analyst Mark Gurman, Apple will announce at its Worldwide Developers Conference (WWDC) in June 2020 that it will switch its Macs from Intel processors to its own ARM-based chips.
According to Gurman, internal tests at Apple have shown significant improvements in performance when using ARM chips compared to current Intel options, particularly in the areas of artificial intelligence and graphics. The tests also apparently showed that ARM chips are much more energy efficient, which would likely make MacBooks thinner and lighter in the future.
Apple's iPhones and iPads are already powered by ARM processors and are ahead of the competition in terms of performance. The upcoming Mac ARM chips will reportedly be based on these processors, but will continue to run MacOS instead of a version of iOS or iPadOS. If Apple can repeat its success on their mobile devices, it could be a significant improvement for the Mac.
The ARM switch has been rumored for many months. Other analysts like Ming-Chi Kuo have previously shared their thoughts on the subject, and leaked code from MacOS betas has indicated that Apple is trying to move away from Intel processors on its Macs.
But Gurman's comment that the announcement will come on WWDC is a significant development. Gurman is known for its reliable track record and accurate sources. Therefore, obtaining his seal of approval is a significant boost to the rumor that WWDC is the event to look for ARM-related news.
It's not the first time that Gurman claims Apple will switch to ARM. New this time is his insistence that the announcement be made immediately at Apple's developer-oriented event.
Unlike in previous years, WWDC 2020 will be fully online due to the ongoing disruption from the coronavirus pandemic. This means that more people can participate virtually, making the event an ideal platform for a big announcement like switching to ARM.
We previously argued that WWDC was the perfect time to uncover the switch, and Apple's own WWDC marketing material seems to indicate this possibility. Both Apple's first and second WWDC teaser images show the Mac (especially the MacBook) prominently, suggesting that Apple's laptops will be the focus of the event.