New Ricoh GR camera rumored for Photokina

A new Ricoh GR camera is rumored to be announced for Photokina at the end of September - here are some of the hints:

"GRmany Meet & Greet @photokina" event on September 29, 2018 with the top management and the GR product development team from Japan
New Image Sync Ver. 2.0.0 will be announced at the end of September
New Ricoh BJ-11 battery charger already registered in South Korea
“GR restart” on the Ricoh GR Facebook page
Dpreview interview: "Although we don’t know whether it will be called GR III or not, the study for the development of the next GR is already ongoing. We cannot say when, and how exactly it will be, but the next GR will come someday."

The last Ricoh GR II camera model is currently selling for $596.95.