Looking a little more deeply; trying to use Brain Cloud with the Lyra example code

https://github.com/getbraincloud/braincloud-unreal-plugin-src/blob/335e9c6fe0deb6674254b30ba5edb24f9a35817c/Source/OnlineSubsystemBrainCloud/Private/OnlineSubsystemBrainCloud.cpp#L28

The session interface isn't written (nullptr) is returned. Can I presume from this that the OnlineSubsystem is in a pretty "early access" form?

Hello, we are investigating using BC with UE5.1. I see that the Online Subsystem support is currently in development but Epic are advising UE5.1+ games to use the new Online Services API. Are there plans to support the new Online Services API and is there an ETA for the completion of the Online Subsystem Support?

Thanks.