MongoDB 4.0.0-rc6 is out and is ready for testing. This is the culmination of the 3.7.x development series, and includes many exciting new features. For more details about the features included in MongoDB 4.0, please see the announcement of the first release candidate. Get up to speed on MongoDB 4.0 with the online course M040: New Features and Tools in MongoDB 4.0
Fixed in this release candidate:
SERVER-34977 subtract capped deletes from fastcount during replication recovery
SERVER-35271 4.0 rc0 upgrade from 3.6.5 logs "unsupported WiredTiger file version" error
SERVER-35401 Whole-db and whole-cluster change streams do not filter operations to "system" collections
SERVER-35569 reIndex should take a Global exclusive lock instead of just Database
SERVER-35584 Increase replication rollback time limit
SERVER-35604 Acquire Global IX before preallocating a multi-document transaction snapshot
SERVER-35615 AsyncDBClient should parse isMaster response before calling validateHost
4.0 Release Notes | All Issues | Downloads
As always, please let us know of any issues.
– The MongoDB Team