Perhaps the most critical under-the-hood change is the MongoDB Node driver upgrade to version 4.13. This brings:
Released in late 2023, Meteor 1.19.2 acts as a bridge between the older Fibers-based architecture and the modern async/await world. It is the culmination of the "Meteor 3.0 readiness" efforts, ensuring that your current codebase can run on the upcoming async-only Meteor 3.0 with minimal friction. meteor 1.19.2
Run meteor update --release 1.19.2 now and join the modern era of full-stack JavaScript. Perhaps the most critical under-the-hood change is the