Leica France posted on their Instagram story several pictures of the upcoming Leica SL2 camera. You can see this post for a comparison between the old SL and the upcoming SL2. The new SL2 will have a 47MP CMOS sensor, new "CINE mode" and 4k video. The SL2 will have Wi-Fi / Bluetooth and will be compatible with the Leica FOTOS app. The official announcement is expected in the next few weeks (most likely in November).
Here are the screenshots:
The last screenshot is from the French photographer Fred Mortagne.
Via LeicaRumors