After over 50 years on CBS (where the awards were live for the first time--NBC aired an annual taped variety special featuring Grammy winners performing called "The Best on Record" in the 60s), the Grammys will move to Walt's place in 2027 and simulcast on ABC and Disney+ (with a next day on Hulu):
Considering that this year the Eye picked up the American Music Awards, an ABC fixture from the beginning of the awards, it is no surprise that the Grammys would switch TV homes.