I think we're looking at a visual of a successful border where they stopped the fire. This is looking towards Big Bear from Keller Peak at 4:59 PM PDT. It certainly seems promising! Live Cam: https://ops.alertcalifornia.org/cam-console/2045
I doubt this is new news, I just didn't notice it until now and figured it was a positive update to share.
Here is the video report from Cal Fire earlier today, with the link starting the video right when he goes into detail about the current situation on the Big Bear front: https://youtu.be/DEeE4YRbDWI?feature=shared&t=268
Here's an annotated transcription of the Big Bear Portion of the update, which is extremely positive for us: