Calli's collab'd with Yoon (STAYC) to release an alternate version of Go-Getters

It's described as a "remix" but the non-vocal section of the track is (I think?) the same -- but it's not just a straight cover either. I have no context for this being dropped; I'd assume it was discussed by Calli somewhere?

It's available through usual platforms (with tracking) here: https://lnk.to/mcggyoon

p.s. what is the "correct" informal past tense for "collab"? PLEASE SEND LINGUISTIC ASSISTANCE

edit: okay, it got mentioned here in JP - looks like it's gonna be a bonus track in Phantomime.