Pop group The Police are expected to announce plans for a 30th anniversary world tour.
The Police were inducted into the Rock and Roll Hall of Fame in 2003
The band will make a "special announcement" in Los Angeles on Monday - the day after they reform at the Grammy Awards.
The Police enjoyed global success in the 1980s but have performed only a handful of times since releasing their last album in 1983.
Frontman Sting has had a successful solo career with eight studio albums.
After confirming their appearance at the Grammys, the group arranged a rehearsal session, which will be followed by the announcement.
Sting, drummer Stewart Copeland and guitarist Andy Summers will hold the press conference at the Whisky A Go Go nightclub in West Hollywood.
Universal Music will release a CD - possibly a greatest hits compilation - to mark the anniversary but has so far not confirmed the details.
Other performers at the Grammys have been confirmed as Shakira, Wyclef Jean, Christina Aguilera, Beyonce, and the Red Hot Chili Peppers.