In a recent Japanese interview about the new GH6 camera, Panasonic's marketing manager Tomonori Nakanishi confirmed the company's commitment to the Micro Four Thirds format - they have been repeating that on a regular basis in the past few years. Here is the Google translation starting from around the 20:30 mark:
"We believe in the diverse possibilities of Micro Four Thirds, and we are developing such diversified products. In today’s world where full-size machines are becoming more popular in a sense, it may be a unique approach to develop the full-size lineup in-house and at the same time to develop the Micro Four Thirds lineup in full-scale. do not have. However, I believe that this approach will allow the “GH6” to establish a very sharp and unique position in the world at this moment."
Here is some talk about a potential Panasonic G9 successor (at the 22:08 mark):
Via Diyphotography