Buttler power-up available as a default, for free?

CardIt

Has Butler been made free for all?

I don't have a Trello subscription, but it seems that I can use 2 power-ups, Butler (On all my boards), which I don't remember enabling, and one that I did enable. 

On that note, it seems that the Butler power-up, whenever it was enabled, automatically started making lists on one of my board (I'm not 100% on whether this was the power-up), trying to copy my format, but it failed, and now I have to fix the problem. 

 

Edit:

Here are screenshots (For all of theses I didn't enable Butler):

Butler power-up on board that has no other power-up enabled:

Subscription page (I'm not subscribed to anything, as far as I know):

Butler power-up on board with Calendar power-up enabled:

Butler power-up enabled on another board with no other power-up:

CardIt

In Trello's news update, they said:

"We're removing tedious tasks from everyone's to-do lists by making automation with Butler core to every single Trello board, because teams should be able to focus on the work that matters most."

So,...Butler is now available for all (1 command of each type for free plans),...along with other things were implemented in the update. Whohoo!!!