When a new beta comes out, you'll receive an e-mail with a link to download the beta.
At that point, a thread will also be opened here to report problems with the beta. You should enable debug mode when you install the beta. That way if you have a catastrophic failure, you'll be able to send complete logs to the developers.
Use Waze the way you normally do. Discuss any problems you see in the thread here. If new features are implemented in the beta release (you'll be notified of that in the forum thread), try them out. If you're really adventurous, try sequences of commands to Waze that nobody would ever do in real life...TRY to make it come up with an error. Then report your findings here.
top_gun_de wrote:Perlin seems to have replaced several testers in a batch, I was admitted some days ago as well.
That makes sense, and it's been about 6 months since the last round of changes to the list. It seems like someone said that the list can only be updated every 6 months...it definitely is restricted and has to be done in a batch. So this may have been the only opportunity, regardless of what's actually happening with the beta versions.