The GM1s has two new colors (blue and a cordovan leather color) and some minor firmware features (via Google translation):
Transfer the short video on the smartphone to make a short movie to “snap movie mode”
P / A / S is available the same 22 species image effect of the “Creative Control” (Filter) / M mode
WiFi connection by reading the QR code is displayed on the camera monitor smartphone
Without going through a smartphone, you can up the image from the camera directly to the SNS
New expansion ISO100
I agree that the GM1’s real focus is delivering small camera size despite the toll that takes on handling. The GM1s at least gets some of the GM5’s features. I personally will gladly take the compromised touch screen to get the EVF and decent thumbwheel control instead of the horrid multifunction dial on my GM1.

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.