I didn't realize Berlin was in the process of switching over to CLMRN. I haven't heard anything on either channel recently.
I came across a couple resources the other day albeit a year outdated that would be helpful. If you go
here to the CTS website then scroll down to here:

You can see the agencies that are waiting to be onboarded as well as other agencies with just access agreements. There are also some other maps and resources on the page too. Now we all know what talkgroups to keep an eye out for in the future in general, but I'm not sure how often those maps are updated. It is amazing to see nearly the entire state on the system.