Long time lurker.
I find waiting for 3 months for NYU to be entirely agonizing. Most the other schools, Columbia, Chicago, Wharton tell you within 1.5 months whether you're in, out, or waitlisted.
NYU makes the rejects wait 3 months before they find out, thereby inhibiting their ability to work on other applications because so much mental energy is devoted to obsessing about Stern.
I think it's safe to say that they picked out the bunch they wanted in December and 1st week of January, 2nd week of January is reserved for waitlists, and with the R2 deadline this Saturday, I think it's safe to say if you don't hear anything this week, consider yourself a gonner.