Meteor 3.5 introduced MongoDB Change Streams, DDP session resumption, pluggable transports, and Node.js 24. Meteor 3.5.1 then strengthened Meteor runtime, Rspack and reconnection behavior. Meteor 3.5.2-beta.0 continues that reliability work by refining Rspack builds, updating the Cordova Android toolchain, strengthening runtime defaults, and addressing community reports and reproductions.