So, per Kat:
https://twitter.com/katmtan/status/940741334196817920 https://twitter.com/katmtan/status/940806020519079936 https://twitter.com/katmtan/status/940982227139043328 http://katmtan.tumblr.com/post/168505098052/wait-when-you-say-a-cast-member-is-missing-and
She is saying that Gabrielle is not on the series anymore, and that we might get an announcement.
Of course, not 100% confirmed or sure... I mean, the winter vacation starts next Monday, and Robert already left for his vacation, so... But it is Kat, and she is know to have valuable information.
What do you think about it?