The upcoming 5-star Electro catalyst user could be joined by the following characters in her event banner:
Diona, four-star Cryo bow user
Fischl, four-star Electro bow user
Thoma, four-star Pyro polearm user
As for the weapon banner, it is expected to feature the weapons as follows:
Kagura's Verity (five-star catalyst)
Primordial Jade Cutter (five-star sword)
Rainslasher (four-star claymore)
Eye of Perception (catalyst)
Stringless (four-star bow)
miHoyo also announced that the second banner will bring back 5-star Electro polearm user, Raiden Shogun and 5-star Hydro catalyst user, Sangonomiya Kokomi.
miHoYo has confirmed that the weapons in the upcoming update will include the 5-star Kagura's Verity.