The Holiday OPI collection has been spotted at Trade Secret and it is also up on Transdesign.com. You can find swatches of the collection on The Polish Addict, The Nailphile, and All Lacquered Up.
Before I saw the swatches I was thinking I only needed one or two. However I need all the darks and sheers and maybe one of the reds. Which ones are you thinking about getting?