Here's some data from the past few years of January round GMAT club Tuck forums:
2012: 89 applicants, 24 (27%) admitted
2013: 97 applicants, 21 (22%) admitted
2014: 135 applicants, 30 (22%) admitted
2015: 173 applicants. As of 1:41pm EST, 12 admits (7%)
The 2015 numbers are just way below those from previous years. It is certainly possible that this is just a really low-yield year (as happened in MIT's round 2 this year). However, I think it's more likely that there will be at least another 10-20 admits from this forum.