[2021] What happened to Siege Engine Fireballs?

Hey everyone! I don't want to come across as an annoyance so i'll be quick. I haven't had the time to check twitter about this topic but i remember about a week ago Mod Luma said something about adding these fireballs to the siege engines, but i think i missed the memo and forgot if they would be added this week or the next one.

I haven't seen discussions or comments about it on reddit, so that's why i'm asking. Also i'm new in the community so apologies for any mistakes in the post.