I only played two new courses to me this year worth noting:
Missing Links - 7
I'm confident that this 9 hole course has never been seen by GCA. I hope to be able to share more about it in the future, but for now I can only say that it is on a body of water in New England, was extremely well-routed by members of the family that still owns the property in the 1920's, and is only a 7 because the greens are very small. One of the most special places I've ever had the privilege of playing.
Balboa Park GC - 5
I'm torn between 5 and 6 here. The site is very severe and several of the holes border on the absurd, but there is some rollicking brilliance, too (6, 7, 10, 12, 14, 15, and yes, 16 are all great). They've taken out/lost some big trees recently, so the views of downtown on the back nine have gotten even better. For the price and the setting so close to a major metropolitan area, it is a great municipal course. The range might be a Doak 1, though.
Two other new ones (briefly):
Encinitas Ranch - 3
Woodland GC - 4