Canon EOS 5D Mark IV, also known as Canon EOS 5D Mark 4, 5D4, 5D MK 4, is a rumored professional full frame DSLR to be announced in 2014 – 2015.
5D Mark IV is the successor of 5D Mark III. According to latest rumors , 5D Mark IV will have big update from current Canon EOS 5D Mark III.