Judging from the previous posts, I'm assuming the earliest we will hear back is March 31st, and possibly not until the end of April (which would be really inconvenient since most graduate programs would require an answer by then). I've searched their website and couldn't find anything about a response date, but it seems like that is when most external fellowships are announced, as well, so I'm going to do my best to forget about it for another month or two.
I'm really hoping the 10% acceptance rate is not entirely accurate ? (maybe it includes incomplete applications?), but considering how much money each fellowship is worth, it seems possible that it could be that low.