I've found chronicle-queue version on maven central is quite old: 4.5.27, while 4.6.23 is most recent released on github. Does it mean 4.5.27 is a kind of "prod-ready", while all 4.5.27+ are experimental? Or you use other repositories for distribution?
The 4.5.27 version is stable and available to all users.
The 4.6.x version is being developed and available to supported clients. We expect to make a public release of this version this month.