Hi Joe;
When I make a preview release available, I've made an announcement on the mailing list. The announcement describes what's new, fixed or changed. Some of it represents a work-in-progress. There are often good reasons for NOT installing a preview release. When you download and install a preview release, you're flying blind. The preview version could have a bug or some unintended consequence that is in the process of being fixed.
When you post a screenshot with the preview version number like that, you're encouraging others to download the preview version. They end up with a bad experience - which can be avoided by waiting for an official release.
Here's an example: you download a preview version, run it on your local P25 system. Works great so you announce that. Someone else downloads it - expecting to have the same experience. He's monitoring an MPT1327 system - and this hypothetical preview happens to have a MPT1327 decoding bug so he's not happy. He posts about his bad experience here. I have to step in and ask him to roll back.
We avoid this problem by having individuals volunteer for preview testing. That smaller audience is managed through the Google group.
All I'm saying is ... if anyone wants to mess with the preview releases - please sign up on the Google group. You don't need a gmail account - just an email address.