BlackBerry messenger has gained a video chat feature, available on the new BlackBerry 10 OS, which was released today. It will also feature BBM Voice, which will allow free voice calls over Wi-Fi, and will let users switch between talking and texting. The new BlackBerry Z10, also revealed today, is eight ounces heavier than the iPhone 5, with around the same resolution as Samsung's Galaxy S III. It features an 8 megapixel camera and will be 4G compatible. Read more by clicking...