Cinema5D interviewed Panasonic manager Mike Owen. They tried to spill out some more info but they didn’t get a lot of new info:
We have been assured that, when released, these cameras will have the best possible codec for video recording. Also autofocus for video recording is a priority for Panasonic, so hopefully the new cameras are supposed to have a powerful AF. We are still trying to confirm if the new cameras will have 10-bit internal recording. As soon as we get the official information from Panasonic, we will update the article.