I remember Mix 106.5 going Xmas every year up until its flip to the Lake.95.5 FM "The Fish" and WDOK have been the go-to stations for Christmas music most recently. They may both start at close to the same time. This scenario leaves Clear Channel and Radio One without an all-Christmas station. If you'll recall, 106.5 FM was the first one to test the waters and go all-Christmas a decade or more ago.
95.5 (Salem), 102.1 (CBS), and 105.7 (Clear Channel) play the Holiday tunes in Cleveland. The question would be when they'll flip.
They'll all be there by Thanksgiving week.
UPDATE: WDOK is now all-Christmas too! I guess Majic flipping got them on panic.