The upcoming Canon EOS 6D Mark II will be officially announced in May or June, 2017, after NAB Show in April, 2017. According to latest rumors, 6D Mark II will have a 28MP full frame sensor and a larger viewfinder.
A new DSLR camera named Pentax KP is registered at Indonesian telecommunication agency. This camera will be officially announced at CP+ Show in Japan in February, 2017.
Fujifilm will officially announce new products on January 19, 2017, here is the full list of new Fujifilm products to be announced on that day.
According to recently rumors, Sony is planning to announce a new cheap (budget) full frame E-mount 85mm lens in 2017.