An official BlackBerry video shows a feature of the all-touch BlackBerry Z10 that has not been widely promoted. Based on the video, it appears that users of the first BlackBerry 10 flavored device have a handwriting recognition engine in BBM that works, at the least, in Chinese. While our knowledge of the Chinese language is non-existent, we can make out the 8PM time written by the user and the word "Central" that follows it.
Since BlackBerry has not really promoted this feature it is unclear whether it will be expanded to other languages. While BlackBerry users might be celebrating this as something new, you might recall a similar feature being available on 2008's LG Dare. The Dare allowed users to use their finger tip to input numbers and letters in English instead of using the virtual QWERTY keyboard.
Really good to see BB is trying to embrace the touch screen after being a keyboard oriented design for so long.
Definitely not a new thing tho, I'm pretty sure iOS has had this feature for a few years now. Go keyboard and Swype for Android had plugins for a couple of years as well. Hopefully the stock Android keyboard will eventually do the same (if it hasn't already, still on ICS myself).