BlackBerry Passport, the next flagship device from the Canadian mobile tech major, will support 4K video recording, suggests a new disclosure. But the feature will not be available when the handset is unveiled, which is expected in September. BlackBerry is currently looking at the 4K recording feature. If the testing is successful, the video capability will be added in the upcoming operating system, BlackBerry 10.3.1, for BlackBerry Passport, according to CrackBerry.