I'm a member, so I post anything I get in case it's content others might not get; these tend to be more in-depth stories about individual animals, but they are sometimes newsworthy too, as in Shanthi's arthritis or Bozie's illness of 2013 or the specifics of a panda AI. Andrew always has his ear on Twitter and posts news immediately. Between us, I think we tend to cover what news there is. Right now, the only way to know more would be for volunteers or keepers to share what they know, and that might not be likely.
ZooChatters at the time strongly suspected that the SD bears were sent home before their agreement had expired, and there was absolutely no doubt that is was a sudden and unhappy surprise to SDZ. If there was any doubt, when the preparations and departure were shown on The Zoo, everyone involved looked very rattled, and Bai Yun's keeper somewhat stammered about why they were returning at that time, and the phrase they had clearly been given to use was, "It's time," suggesting time for a return to their ancestral home. If the DC bears are suddenly recalled before December, we'll be quite sure this has to do with a breakdown in (panda) diplomacy. Possible virus developments should only delay their return, not hasten it, so that might be another sign. The results on the election in November could have some bearing on this decision too.
As for elephants, I am somewhat nervous every time I see an NZP alert, because I'm afraid it will be news of Shanthi's demise. Her death would truly be much more difficult--for me at least-- having not had the chance to see her in so long.