I'm a bit in the same boat for this.
I am waiting for a fix/addition to SmarterMail that would resolve an issue we have with retrieving informations from the server through the API.
It has been added to beta build 8909:
Logically I thought it would also be available when stable 8909 build is out, but it wasn't.
So now I'm a bit lost as on which stable build it will be available as the changelog for stable/beta for a same build number differs.
Now, it's really cool that there are two branches stable and beta. Here in the community we were asking for this for a long time :) But yes, the version numbering between beta and stable is a bit confusing.
Sébastien Riccio
System & Network Admin
https://swisscenter.com