dpreview has just posted their interview with Panasonic president Yosuke Yamane at Photokina 2018. They talked everything about Panasonic S1 and S1R and L-mount, and upcoming Panasonic cameras & lenses:
As rumored before, Panasonic is likely to announce the price and more specs of Panasonic S1 and S1R at CES 2019. Panasonic will have a press conference ahead of CES 2019 on January 7th, 2019, 10:00am – 10:45am PST. You can see leaked press release page at Panasonic USA.
According to some EU stores online, the upcoming Panasonic S1 and S1R full frame mirrorless cameras are expected to be shipped in April, 2019. We already know that Panasonic will release more info and pre-order options in January 2019. Stay tuned for more info.