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YouTube tech personality Dave Lee first brought the issue to public attention with a video in which he demonstrated the heat and throttling issues.
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Secondly, there was the speed throttling issue that emerged just days after the July 12 announcement: Some of the most gung-ho early adopters who ran out and got Core i9 MacBook Pros as soon as they were released found mysteriously throttled performance. First, there was confusion over that keyboard: Apple maintained that the new third-gen butterfly keyboard was quieter but otherwise unchanged - but a teardown at repair site iFixit revealed a totally new membrane that may well address the issue of sticky and dust-afflicted keys on earlier models that have prompted class action lawsuits against Apple. To say things got off to a rocky start is putting it mildly. If anything, the expensive add-on option for one of Intel's new six-core Core i9 processors would appeal to pro-level users, such as video editors and 3D artists, who may be starting to feel that Apple isn't keeping up with their ever-expanding needs for high-end gear.
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At the same time, the slim unibody aluminum design would remain unchanged since its last design overhaul in late 2016, keeping features both loved (the giant track pad) and not-so-loved (the slim-travel keyboard, the USB-C-only connections). Apple's 13-inch and 15-inch Touch Bar MacBook Pro models would get new eighth-gen Intel processors, more storage and RAM options, a color-temperature-sensing True Tone screen and other tweaks - all nice improvements over a ho-hum 2017 update. On paper, it looked like an impressive, if predictable, set of internal component upgrades.
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