New Leica Summilux M lenses have been rumored for a while. I recently received a tip indicating that new 35mm and 50mm Summilux M lenses are going to be announced later this year.
I have been reporting for a while that Leica will slowly start upgrading their M lenses to be a better fit for future high megapixel cameras. While most current M lenses are probably going to be ok when used with the latest 60MP Leica M11 camera, you have to consider that the MP count will only go up in the future.