The highlights of this release are:
- Support observeChangesAsync and observeAsync [Meteor 2.x]
- New mongo package options to optimize Oplog tailing performance to include/exclude certain collections #13009
You can find everything else that was added in the release PR.
How to test:
meteor update --release 2.16-beta.1
# or
meteor create appname --release 2.16-beta.1