There are stories floating around saying Canon may be working on a new generation of CMOS sensors with lower production costs and higher yields. The future use of these new sensors, depending on configuration, may include mirrorless, prosumer and professional DSLR model cameras. The upcoming release of the EOS-7D Mk II camera may have a more advanced variant of the current EOS-70D's 20MP sensor.
Frankly, that is hardly news. Canon is a 'blue chip' Japanese company with a massive research and development budget. They rank first among Japanese companies in U.S. patents awarded 9 years in a row and is the 35th most respected company among the Global 100. Nikon is not on either list.
Canon's engineers are researching on 'concept' technologies that will blow your mind, like 100+ MP sensors, etc. Of course, some of these projects will never come to fruition because they have to get pass the accountants and prove their cost vs. benefit ratio to senior management.