In a recent interview, Yamane-san (director of the Imaging Business Unit at Panasonic) confirmed that phase detection AF is coming to future Panasonic MFT cameras:
"As for future cameras, we will adopt the optimal autofocus method each time, while assessing the target users and customer benefits. We will consider installing PDAF depending on the characteristics of the model, not only for full size but also for MFTs, so please look forward to it."
"We will continue to support creators and develop products that creators want. And we will also consider the need for higher-end products to meet the future needs of creators. I can’t give you details about future products, but Johnnie’s high-end model for video production professionals may take a little more time. Anyway, please look forward to that day."
This could mean that will may see a Panasonic GH7 with PDAF (Phase Detect Auto Focus) in the future.
Source: Cined, via LeicaRumors