i have met lot of students who had interviews at UMDNJ at interviews. it seems like they have had interviews since at least september and like any other school im pretty sure they have at least one group each week.
not a reliable source but it's safe to assume that most schools have had good numbers of ppl invited at this time but it's still in the early-mid part of game (SDN and predents.com does reflect very small portion of actual interviewees, only about 1-2 out of 15 ppl i see at interviews are actively updating on these sites, whereas most of other ppl are either just readers or do not like to come to these sites =\)
oh yeah, only reason i ask ppl about UMDNJ in interviews is b/c i got rejected from there early in the process haha
so at least not being rejected is good sign =)