Credit:
As all Digg regulars (read: fanatics who spend most of their day digging and submitting stories. Yes, that includes me) know, stories in Digg's upcoming sections have a 24 hour expiration time; if a story is older than one day, and it hasn't reached "popular" status, it is removed from the upcoming section, never to come back.
However, currently there are a number of stories accross all upcoming sections with timestamps of 25, 26, and even 30 hours or more. Has Digg changed their policy, or is this merely a temporary glitch? The official Digg blog is silent, but I guess we'll know soon enough.
Credit:
Thanks to Muhammad Saleem for the Twitter tip.