i have a question about the vocaloid collab costumes that are going to come to endori in july! (the morfonica, roselia, and raise a suilen ones)

i'm new to bandori so i've only experienced one vocaloid costume event, which involved the mechanical girl pasupa costumes being given as a login bonus and for popipa(?), hhw, and afterglow having collab costumes you could buy for 100 stickers each.

i just wanted to ask: this year, are there going to be free vocaloid collab costume sets? or are all 3 costume sets exclusively available through 100 michelle stickers? if anyone was playing at this time and remembers, or simply knows the answer, i'd really appreciate feedback ;_;