KDYL has flipped to a simulcast of KFUR-LP 101.1 (St. George). I heard the legal ID with both station's call letters and their frequencies given, and also verified KDYL's signal against the KFUR-LP stream. The new format is a Spanish language format.
Trivia fact: KFUR was KLO's original call letters when the station signed on in 1924. It didn't become KLO until 1934.
According to Wikipedia, the new KDYL format is Radio Unica, which formerly aired on KBJA 1640 and KHQN 1480. FWIW, KDYL (and KMRI 1550) have been operating with full 10 KW daytime power 24/7 for at least a month now, and apparently the FCC has yet to notice.