Canon is rumored to be currently testing a new EOS R mirrorless camera with an APS-C sensor. It is not clear if this model will be officially announced in the future.
The new 26.1MP X-Trans CMOS sensor inside the new Fuji X-T3 camera is made by Sony and not by Samsung as some websites have wrongly reported (see this post). This information is coming from Theo Georgiades, Managing Director of Fujifilm UK in a recent interview with PGN:
Another new third-party lens that was announced at the 2018 Photokina show: Meike 6-11mm f/3.5 fisheye manual focus lens for Nikon and Canon cameras. Here are the specifications and additional pictures: