As I reported a few days ago, there is a new Leica 1546 camera model registered in Asia that will have built-in Wi-Fi and Bluetooth and will use the same radio parts as the Panasonic TX2 and Panasonic GX7 cameras, as well as a new ACA-DC 16-E power adapter.
The new Leica 1546 camera will be manufactured by Panasonic AVC Networks Xiamen Co., Ltd. in China - this means the 1546 will most likely be one of the Panasonic rebadged Leica cameras - most likely a new Leica D-Lux since the current D-Lux model was announced back in 2014 (or a new V-Lux, but I doubt that).
One thing I am pretty certain about is that the 1546 will not be a new Leica SL model. Panasonic will not produce a new SL full frame mirrorless camera for Leica in China for the simple reason that the current Leica SL Typ 601 camera is made in Germany (see picture above) and I do not expect it to be replaced any time soon (see also this and this post):
Update: Leica SL Typ 601 camera is not even close to being discontinued
The Leica SL mirrorless camera will not be replaced anytime soon
Via LeicaRumors