https://wccftech.com/12-inch-arm-macbook-arriving-2020-says-tipster/

Though Apple is said to announce its transition from Intel to its own A-series chips for future Macs, it doesn’t necessarily mean that the first ARM MacBook will arrive this year. According to multiple reports, Apple’s first ARM-fueled Mac is said to arrive in 2021, but a tipster believes otherwise.

Twitter user L0vetodream hasn’t published a large tweet, as the only thing he’s implied is that an ‘ARM Mac’ will arrive this year. According to previous reports, Apple is preparing a 12-inch ARM MacBook, so the ‘ARM Mac’ will most likely be this version. The company could stick to the same chassis design as the discontinued model. Since it sports a fanless design and given that Apple’s A-series of chipsets can perform very well using a passive cooling solution, that smaller form factor should be more than sufficient.