Calendar Beta for Drupal 6

Hi there,

I have a question about "recommendations" that come along with modules. I noticed in the Drupal overall documentation, it mentions for drupal itself that:

Beta releases
These are the first to come out, and are therefore the least stable. During the period of beta releases, usability features are still considered, the translatable strings (help texts, words in the interface, etc) might be altered, and if absolutely necessary, the API or database schema could change (to fix a critical bug). Of course, other kinds of bug fixes are always applied.

But with the "Official Releases" section of the "Calendar" module, it says that the beta4 is the recommended release for Drupal 6.

Probably a stupid question, but it's probably only recommended for Drupal 6 because it's the only release of Calendar that works with Drupal 6, right? Not that it's recommended because it would be anywhere near production ready?

Any insight would be much appreciated!