Changes to pricing structure and what features are in the free plan?

As far as I’m aware there has been no change to the category limits. The limit is 10 public categories and no private ones.

I’m not seeing a limit on number, but on type.

When I go to create a new category, I can choose between:
Discussion A standard category with all the essentials for conversation.
Support Where members can ask questions and mark replies as solutions.
Ideas Where members can submit ideas and vote on the ones they want most.

A couple weeks ago, I’m pretty sure all three were available on a free plan, but today the second requires Pro and the third Business.

We allow only essential transactional emails (account activation and password resets) on the free plan, but due to an oversight, the email in functionality wasn’t disabled. We noticed that recently and reverted.

Good to know this was an intentional change. I’m not sure if I’m weird, but this strikes me as a key feature, so I’m confused it doesn’t have a row on the feature matrix. Could one be added? (The category types also seems to be missing, but I’m less clear on the importance of them.)

Thanks for your reply.