This study from Jilin University on ancient Chinese Y-DNA features 119 individual samples from 13 archaeological sites in northern China. That's quite impressive considering that aDNA is extremely difficult to extract from Y-chromosomes. Some of the results have apparently already appeared in print, like those R from western China on the first map. They're all R1a1a, from the Xiaohe Tomb complex in the Tarim Basin, and you can read more about them here. The high incidence of N looks interesting, but at this stage I have no idea what type of N it is nor which samples it was found in, because the study is in Chinese. I'll update this entry when I find out. In any case, the homogeneity of these samples is remarkable, with single haplogroups totally dominating many of the sites.
Update 13/01/2013: A Chinese contact was kind enough to make a list of the results. Please note, the 2010 paper on the Tarim Basin mummies I linked to above only listed 7 R1a1a results, while here we have 11, plus a K*. So it looks like I was wrong, and at least some of these are from newly tested Tarim Basin samples.
Niuheliang, Hongshan Culture, 5000 YBP, 4 N, 1 C*, 1 O
Halahaigou, Hongshan-Xiaoheyan Culture, 4500 YBP, all N
Dadianzi, Lower Xiajiadian Culture, 3600 YBP, 3 N, 2 O3
Dashanqian, Upper Xiajiadian Culture, 3000 YBP, 1 C, 3 N1c, 1 N, 2 O3-M117, 2 O3-M324
Jinggouzi, 2500 YBP, all C
Xiaohe, Xinjiang, 3500-4000 YBP, 11 R1a1a, 1 K*
Tianshan Beilu, Hami, Xinjiang, 3300-4000 YBP, 5 N, 1 C
Heigouliang, Xinjiang, 2000 YBP, 6 Q1a*, 4 Q1b, 2 Q
Pengyang, Ningxia, 2500 YBP, all Q1a1-M120
Taojiazhai, Qinghai, 1500 YBP, all O3-M324
Miaozigou, Central-South Inner Mongolia, Yangshao Culture, 5500 YBP, all N
Sanguan site, Yu County, Hebei, Lower Xiajiadian Culture, 3400-3800 YBP, all O3
Hengbei site, Jiang County, Shanxi, 2800-3000 YBP, 9 Q1a1， 2 O2a-M95, 1 N, 4 O3a2-P201, 2 O3, 4 O*
European admixture in ancient East Asians (aka. two-rooted canines carried by early Indo-Europeans to China)