Last week Apple announced the 2019 MacBook Pro, and the word keyboard did not appear in the press release.
Apple is not talking about MacBook keyboard reliability because the problem is fixed. They are not talking about MacBook keyboard reliability because they want the problem to go away.
It will take times for us to learn if the 'new materials' Apple has added to the 2019 MacBook Pro keyboards will solve the reliability problems, but even Apple has their doubts. The "Keyboard Service Program for MacBook, MacBook Air, and MacBook Pro"has been extended to cover not just the 2018 models, but the keyboards in last week's 2019 MacBook Pro's as well.
If you are aware of the risks, new materials or not, now is a good time to buy a new MacBook. Should things go wrong, Apple will cover the replacement of your keyboard for up to four years from the data of purchase. If you have already been burned by Apple's keyboard reliability problems or want to wait, don't expect MacBooks with a new keyboard design until at least 2020.