It's not official - but it's all over discord groups and Reddit. Basically, a load of Eagles have been RMA'd due to the dodgy power connectors. Priority will be given to these customers. The fact that nobody has taken delivery of an eagle for well over a week and the date 30th November is being batted about (albeit, probably a worst-case scenario date), it really wouldn't surprise me if Gigabyte have found the issue, are now fixing it, resulting in a delay with these cards.
Edit: Turns out the new Eagles are coming with the new power connectors. But, there will be a significant backlog and most retailers have no ETA on future shipments of these cards. This isn't my information, just details I am reading from other forums/reddit.