https://motherboard.vice.com/en_us/article/bjbxwm/new-2018-macbook-pro-keyboard

Thursday, Apple introduced brand new versions of its 13” and 15” inch Touch Bar MacBook Pros, a line with keyboards that have been felled by specks of dust. The new MacBook Pros do have updated keyboards, but they don’t have a radically different design, indicating that Apple is still chasing thinness over repairability and upgradeability.

Whether the new, “quieter” keyboard can protect itself from dust and crumbs is far more important than the other details—faster processor, more RAM, etc—and it’s a question we won’t know the answer to for several months, until these things get heavy use by millions of people.