Kolab community version recommendation?

[Klaus Vink Slott]

Any news on when?

A month or more ago I did a little testing on Kolab16 and if found it quite 
useable. I found some guide for Fedora 23 and got it up and running smoothly. 
I had the web interface up and running and poked a little around in it. 

Then I had to attend to other matters, so I forgot about it for a week. I then 
returned, booted the vm and did a dnf upgrade. After that i could no longer 
connect to the kolab web service. (white page).

I then decided to ditch my install until Kolab 16 became stable. 
I have regularly checked back on the download page but there is still no sign 
that Q2 2016 has ended :-) 

My mail server is used by a couple of small local nonprofit organizations so 
stability is crucial.  We do have a stable mail service running (postfix+ 
dovecut) and not in a hurry, so what do the Kolab community suggest?

Should I just wait a little more as Kolab 16 is soon to be released..

Should I install an migrate to Kolab 16 on a Centos as that is reliable enough

Should I migrate to Kolab 14 as  the update to Kolab 16 will not be 
recommended for the next many months - and the update will be a walk in the 
park anyway.

-- 
Regards
Klaus