The next Canon camera body will not be EOS 6D Mark II, instead, it will be Canon Cinema EOS C200. Since 6D Mark II is rumored to be announced in July, 2017, so Cinema EOS C200 will be announced in June or July. CR said that Canon didn’t announce this camera at NAB Show last month due to availability.
Canon Cinema EOS C200 will be a 4K video camera, and will be “pretty loaded”, according to CR. Other specs of C200 is unknown yet, stay tuned for more info.