So, apparently whether or not you've heard back has to do with what country you've applied to. According to various reddit pages, many--if not most--of the European countries began sending out notifications at the beginning of January: https://www.reddit.com/r/fulbright/. There have also been notifications going out from some Asian countries, but not a lot. Whether or not you're an ETA vs. research applicant also factors in to when you're notified. That said, you basically have to check your email everyday from now until the 31st because, depending on the country you applied to, the notification could literally come in any day now.