The Owl House’s fandom’s true kickoff into Lumity (the ship name for Luz x Amity) appeared after a promo shot for an upcoming episode (now revealed to be titled Grom) came out, in which both Amity and Luz are wearing formal attire and standing close together.
Lumity isn't the only queer couple confirmed in the lastest episode!
2021, Emma Tong, "Review of the second season of The Owl House", The Stute (Stevens Institute of Technology, Hoboken, NJ), 10 September 2021, page 10:
The most popular and well-known aspect of this in The Owl House is Lumity, or the bond between Luz and Amity.
2022, Emma Tong, "Beginning of the end: return of Amphibia and Owl House final seasons", The Stute (Stevens Institute of Technology, Hoboken, NJ), 11 March 2022, page 9:
Like exploring Lilith as she leaves the coven and tries to amend for her mistakes in the past, or Lumity taking off finally.
2022, Tiffany Wells, "The Gay Agenda: Being Accepted in Children's Media", thesis submitted to Georgia Southern University, page 36:
Fans wait eagerly for the next episode excited to see more Lumity and to see how the story will progress despite the shortened season.
2022, Mey Rude, "Lumity Shared Their First Kiss on 'The Owl House' & It Was Wonderful", Out, 23 May 2022 (used in title only)